Insurance builds wealth by pooling many small premiums to cover rare big losses and then investing the money while it waits to be paid out, a gap called float, which is why the same contract costs most people money and makes a few people very rich. Nineteen out of every hundred medical claims filed in America get denied, and the industry behind that number is worth an estimated $40 trillion. It made a stockpicker from Nebraska one of the richest men alive, and almost nobody knows how the machine works.
What follows walks through how it works, from a burned London to billionaires’ trusts, and ends with the moves a regular buyer can make. Some of the topics here involve tax strategies, health coverage and lawsuits that are still in court, so read them as the video’s account and not as financial or legal advice.
Watch the full video here, or skip to the breakdown below.
The 11 stops at a glance
- The whole trick, in one room (2:19)
- The greatest bet in London, and when insurance was a casino (3:47)
- The comet man’s death table (8:11)
- The secret river: Buffett’s float (10:25)
- Insurance for the insurers, and the fraud that feeds on trust (13:45)
- The machine that says no (20:33)
- The policy designed to outlast you: term vs whole life (24:33)
- The rich side of the same contract (28:16)
- The six-week license and the people buying the industry (34:13)
- When the machine breaks, and where it is heading (41:01)
- How to play the game (49:18)
1. The whole trick, in one room
Picture 100 people in a room, all afraid of the same thing: their house burning down. In a normal year maybe one of those houses catches fire, and nobody knows which. So everyone puts $5,000 into a shared pot, which makes $500,000. If one house burns, the pot pays about $400,000 to rebuild it. The unlucky homeowner is made whole, and the other 99 lost $5,000 each for nothing, except they now know they would have been covered too.
Whoever runs the room keeps what is left, $100,000 in this case, just for organizing the pot and doing the math on how likely a fire was. That is the entire trick behind every insurance company that has ever existed: spread a loss big enough to ruin one person across a group large enough that it barely dents anybody, and keep the remainder. It is just math, and insurers have it down to a science, which lets them do it at scale.
What looks small to you is enormous at scale.
2. The greatest bet in London, and when insurance was a casino
In 1666 a fire burned down almost all of London, thirteen thousand houses in four days. The king asked the country to donate money to rebuild, and people gave less than two hundredths of one percent of what the city had lost. A doctor named Nicholas Barbon saw a burned-out city full of people with no way to protect their next house and sold them a promise: pay a little every year, and we rebuild if your house burns. His Fire Office opened in the 1680s, with Policy Number 1403 costing 130 pounds, and within ten years one in ten London houses had a policy.
Companies bolted a metal fire mark above the door, and since London had no fire department, they ran private brigades. If a house had the wrong company’s plate or none, some crews would let it burn and help a paying customer instead. Benjamin Franklin copied the idea in 1752 with the Philadelphia Contributionship, which still insures homes today.
Then people stopped waiting to insure things they owned. For about a hundred years you could buy a policy betting that a ship you had never seen would sink, or take a policy on a stranger’s death. Parliament shut it down with a law in 1745 requiring a real financial stake in a ship, and another in 1774 for lives. Lawyers still call the rule insurable interest, and it is why your neighbor cannot take out life insurance on you.
Banning the betting solved half the problem, since real risk still needed a real price.
3. The comet man’s death table
The man who cracked that math is famous for something else. Edmond Halley, the astronomer the comet is named after, spent time in the 1690s working through years of death records from a city called Breslau. For every age he worked out the odds that a person survived to the next birthday. It was the first real life table, and it is still the basic idea behind every insurance price: turn a risk into a number, then charge based on the number.
Even at modern scale it does not always work as planned. In 2023 State Farm lost $14.1 billion on the insurance itself, and Allstate was paying out more in claims than it collected, with a combined ratio of 104.5. In 2024 it flipped: State Farm’s loss fell to $6.1 billion, Allstate’s ratio dropped to 94.3 and Progressive’s net income doubled to $8.5 billion. The swing came from the cost of fixing cars and rebuilding houses moving faster than policy prices.
Yet something does not add up. State Farm lost $14.1 billion on insurance in 2023 and its total net worth still grew, from about $135 billion to about $145 billion. The real money must be hiding somewhere other than pricing, in the gap between the moment you pay and the moment, if it comes, the company pays you back.
A company can lose billions on its main business and still get richer.
4. The secret river: Buffett’s float
When you pay a premium, the insurer does not hand it to a claims adjuster and forget it. The money often sits for months or years, and all that waiting money has a name in the industry: float. Warren Buffett has explained in his shareholder letters that float acts like a loan nobody charges interest on and nobody says when to repay. If his insurers break even or make a small profit on the policies, that loan costs him nothing.
Twenty years ago Berkshire Hathaway’s insurance companies held about $46 billion of float. By the end of 2024 it was $171 billion, and across those same years the insurance side also made $32 billion in profit. He took a boring business, GEICO car insurance, and used the river of premiums to buy stakes in Coca-Cola, Apple and American Express before the money had to go back out as claims. Berkshire is not the biggest insurer on Earth by assets. That title goes to Allianz, with just over a trillion dollars, followed by Ping An, with Berkshire third.
Not everyone pulled it off. AIG spent decades as the largest insurer, then one division made side bets on mortgage bonds that had nothing to do with real insurance math. When housing collapsed in 2008, the U.S. government stepped in with a bailout north of $180 billion to stop the damage from spreading.
The float does not care which outcome happens. It depends on who is steering the boat.
5. Insurance for the insurers, and the fraud that feeds on trust
A hurricane does not care about anyone’s spreadsheet. If an insurer wrote too many home policies along one coastline, a single bad season could wipe it out, so insurers buy insurance too. It is called reinsurance, and in 2024 reinsurers collected $394.7 billion in premiums worldwide, with Munich Re holding roughly one dollar in ten. Globally, insurers collect more than $7 trillion a year, which works out to roughly $220,000 flowing in every second, by the video’s own calculation. The chain runs from you to your insurer to a reinsurer and onward, back to a coffee house run by a man named Edward Lloyd that grew into Lloyd’s of London, where a bell salvaged from the wreck of the Lutine still rings once for bad news and twice for good.
That chain runs on trust, and trust gets tested. In the early 1970s Equity Funding Corporation of America, one of the ten largest life insurers in the country, wrote policies on people who did not exist and sold them to reinsurers for cash. It created more than 60,000 fake policies before collapsing in 1973. Twenty-two people were charged and the man who ran it served four years.
At street level fraud looked like fire. In the 1970s and 80s the South Bronx burned so often that firefighters logged fifteen calls an hour. Part of it was a business model: buy a rundown building cheap, resell it between shell companies at inflated prices, insure it at that number, strip it and burn it. One Brooklyn landlord, Imre Oberlander, collected roughly $125,000 from twenty-one fires between 1970 and 1975.
Both frauds exploited the same weakness: an industry built on trusting that the claim on the other end is real.
6. The machine that says no
Health insurance runs on the same math, only the thing priced is your body. It is not how American healthcare began. During World War Two the government froze wages, so companies desperate for workers offered health coverage instead, and that wartime accounting trick is the ancestor of the plan in your paycheck.
In 2024, according to the data cited in the video, insurers denied 19 out of every 100 in-network claims and 37 out of 100 out-of-network ones. Fewer than one in a hundred denied people appealed, and of those who did, the insurer upheld its own decision two times out of three. A 2025 survey of physicians found 95 out of 100 said prior authorization delays care, 79% said patients give up on treatment, and 26% said a denial led to a serious medical emergency.
Two lawsuits sharpen the picture. One filed against UnitedHealth in 2023 claims it used a program called nH Predict to decide when elderly rehab patients lose coverage. A separate suit against Cigna claims its review system let staff reject over 300,000 claims in two months at about one second each. Both are still in court and the companies dispute parts of how they are described, so these remain allegations.
The system is built assuming you will not push back, and most people do not.
7. The policy designed to outlast you: term vs whole life
Life insurance comes in two flavors sold with near-identical pitches. Term covers a set number of years, say twenty or thirty. Die in that window and your family is paid, otherwise the policy simply ends. Whole life never ends as long as you keep paying and builds cash value you can supposedly borrow against, but it often costs five to ten times more for the same payout.
Take half a million dollars of coverage. A healthy 35-year-old might pay around $30 a month for term, against $300 to $500 a month for whole life, for life. These are illustrative figures. A big chunk of the gap goes into a cash pile the insurer gets to invest, the float trick again, only now funded from your paycheck.
So why do agents push the expensive option? Industry reports consistently say permanent policies pay a much bigger commission, often most of the first year’s premium. No regulator publishes one clean figure, but nobody disputes the direction. Persistency data point the same way: 94.1% of whole life policies stay in force against 89.3% of term, with many term holders quitting when the guaranteed price ends. For most people asking how to protect their family for the least money, term wins easily.
Term is built for one job, and it also pays your agent the least.
8. The rich side of the same contract
A different buyer wants that cash pile and what it can do. Cash value grows tax-deferred, and instead of withdrawing it the owner borrows against it. A policy loan is not counted as income, and at death the benefit pays off the loan with the rest reaching the family tax-free. Nelson Nash wrote a book on it in the 1980s called Becoming Your Own Banker. Plenty of advisors push back, because the strategy rests on the same expensive, high-commission policy, so you pay a premium for the privilege of lending yourself your own money.
For estate tax, a wealthy family has an Irrevocable Life Insurance Trust own the policy from day one. Federal law lets an individual pass up to $15 million, or $30 million for a married couple, to heirs tax-free, with 40% tax above that. Because the trust owns the policy, the death benefit stays out of the taxable estate. The family funds it each year using Crummey letters, which give beneficiaries a short withdrawal window to qualify the gift for the annual tax-free limit.
The boldest version is a captive: a business owner starts an insurance company to insure their own business. Under Section 831(b), a small captive can collect close to $3 million a year in premium and pay tax only on investment income, while the business deducts the premiums. The IRS has cracked down. In January 2025, new rules labeled the most aggressive small captives listed transactions, meaning presumptively abusive unless they price real risk like a real insurer. This is not financial or legal advice, and each strategy needs an attorney and an accountant.
One contract, two completely different games played on top of it.
9. The six-week license and the people buying the industry
Everyone who sells you a policy answers to someone. A captive agent works for one company, like a local State Farm or Allstate office, and can sell only its products. An independent agent shops several companies and decides which product to show you first. Neither is automatically the villain, but both are paid by the company selling, not by you.
The entry bar is low. You need no college degree, only a pre-licensing course, an exam of 80 to 160 questions depending on the state, a background check and roughly $655 in fees, and you can be licensed within six weeks. Actuaries, who build the pricing models going back to Halley, face years of brutal exams, yet the average earns about $141,000 a year, and experienced ones clear $200,000.
The real money is in owning the thing that collects the premium. Agencies are the smaller door, and private equity firms have been rolling local shops into giant national brokerages. Starting an actual carrier is nearly closed, because regulators demand reserve capital first. So the biggest investors buy insurers instead. Apollo, KKR, Blackstone, Ares and Brookfield have bought or built life insurers and annuity companies, and Apollo’s Athene alone has completed nearly 50 pension deals worth close to $53 billion. By 2024 U.S. life insurers held $928 billion in Bermuda reinsurance, up from $205 billion in 2010.
Buffett did not invent turning float into a fortune. He just got there first.
10. When the machine breaks, and where it is heading
Even the biggest reinsurance system has a ceiling. Hurricane Katrina cost insurers roughly $45 billion, the September 11th attacks around $40 billion, and Japan’s 2011 earthquake and tsunami $35 to $40 billion of more than $210 billion in damage. California shows what happens near the limit. In 2024 State Farm canceled or declined to renew about 72,000 homeowner policies, with Allstate making similar moves, blaming wildfire risk and rules limiting price increases. Dropped families ended up in the state’s last-resort plan. In February 2024, hackers hit UnitedHealth’s Change Healthcare, which reported an initial cost of $872 million, later topping $2.3 billion, and a reported $22 million ransom.
That raises an honest question. Every insurer collects more than it pays on average, so buying insurance is a losing bet in expected-value terms. The test is whether the loss would be annoying or ruinous. A cracked phone screen you can self-insure, and extended warranties are among the worst-value products sold. A house fire, a serious car accident or a diagnosis that stops you working are ruinous. Can you comfortably survive this exact loss out of pocket tomorrow? If yes, skip the policy. If no, pay the house its edge.
The industry is also changing how it watches. Car insurers sell apps tracking hard braking, sharp turns and night driving. Ping An in China automates close to 60% of accident and health claims, some settled in 51 seconds, and uses facial and voice recognition to verify claimants. Whether this saves careful customers money or builds the most detailed profile on you ever made depends on rules nobody has fully written.
Pay the house its edge only for losses that would end the game.
11. How to play the game
None of this means walk away from insurance. It means treating it as a financial tool with a business built on top of it. Buy term for the job term was built for, and put the savings elsewhere, which is your own tiny version of Buffett’s float. Read denial letters knowing fewer than one in a hundred people appeal, and push anyway.
Ask who is getting paid before you buy: ask a captive agent what they are not allowed to sell you, and ask an independent agent what commission each option pays. Shop your policy every renewal, because price walking raises premiums on loyal customers, with some research putting the gap against new customers at $400 to over $1,000 a year. When negotiating a claim, ask the adjuster the highest number they can approve without a supervisor, since the first offer is rarely the ceiling.
Money that sits in the middle, waiting, before anyone has to give it back, is worth more than almost anything else in business.
Play both sides of the contract
The average person buys a policy, pays every month and hopes never to collect. The wealthy buyer uses the same industry to borrow against it, shield it from estate tax or become the insurer instead of the customer. You do not need eight figures to start narrowing that gap, only to stop playing a single side of the contract.
FAQ
How does insurance make money?
Insurers pool premiums from many people, pay claims for the few who suffer a loss and keep the remainder. They also invest premiums while waiting to pay claims, a pool of waiting money called float.
What is insurance float?
Float is premium money held by an insurer before it has to be paid out as claims. Warren Buffett describes it as acting like a loan with no interest and no set repayment date, if the insurance itself breaks even.
Is term life insurance better than whole life?
For most people asking how to protect their family for the least money, the video says term wins easily. Whole life can cost five to ten times more for the same payout, with a big share going into a cash pile the insurer invests.
What is reinsurance?
Reinsurance is insurance for insurers. An insurer passes part of its risk to a reinsurer in case one bad year hits everyone at once, and reinsurers collected $394.7 billion in premiums worldwide in 2024.
When is insurance worth buying?
When losing the money without it would be ruinous rather than annoying. If you can comfortably absorb the loss out of pocket tomorrow, skip the policy and keep the premium.
What is a captive insurance company?
A company a business owner starts to insure their own business. Under Section 831(b), a small captive can pay tax only on investment income, but the IRS now treats the most aggressive versions as presumptively abusive.
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