4.
Hosni Mubarak
Similar to the last two numbers we have another world leader that failed at politics, making the wrong decisions in life.
When failing, we think about a downfall from the political activity, but in this case, for Hosni Mubarak, the downfall came with an arrest and prosecution for several charges.
With a wealth that exceeds the imaginations and grow somewhere at $7 billion dollars this politician was the longest ruler of Egypt.
The bad politics, he had and the fact that the people were sick of the way he treated them was enough to start a revolution that ended his career and gave him the chance to answer in court for all the illegal things he did.