If he’d never given away a dime or sold a share of the software giant, Gates would have nearly 10 times more leftover to give away.

Tesla CEO Elon Musk has long captured attention with his big promises, from the Hyperloop high-speed transportation system Musk claimed would revolutionize the way we travel to a recent comment about how Tesla owners can one day make money with their autonomously driven cars,

Microsoft founder Bill Gates has revealed his plan for the next 20 years, aiming to "not die rich". In his blogpost, he intends to give away most of his wealth via the Gates Foundation.