Chairman and CEO, FedEx
FedEx founder’s business is thriving on the rise of e-commerce. Revenues of the company, which ships more than 12 million packages a day, hit $50 billion for the first time in the fiscal year ending in May 2016. Smith drafted up the idea for the business in a term paper at Yale, and his professor gave him an average grade. After graduation, he served in Vietnam, where he survived an ambush that left him without a gun, grenade or helmet. He returned home and picked up his old thesis idea.