9Jean-Claude Decaux – Net worth – $6.4 billion
Next on our top list is the French entrepreneur Jean-Claude Decaux.
Born in 1938, he is the Chairman of the advertising firm JCDecaux, founded in 1964.
With an estimated net worth of $6.4 billion, Jean-Claude stepped down as CEO in 2000, but remains honorary Chairman. The firm is now run by his 2 sons, Jean-Charles and Jean-Francois.
2 years ago, the agency won a contract with the city of Sao Paulo to build 1.000 ads in their digitized clock installation.