4. Entrepreneur
EntrpreneurCase Study: Bill Gates
Country of Citizenship: USA
Net Worth: $86 billion (£69.1 billion)
Chances are you’re reading this article while using Windows OS, and if you are, you’ve got Bill Gates to thank for that. Gates dropped out of Harvard back in 1974 to co-found Micro-Soft a year later with Paul Allen, a company which later dropped the hyphen and eventually became the world’s largest software maker by revenue.
Gates is the richest man in the world with a net worth estimated at $86 billion, a title he has held from 1995 to 2007, again in 2009, and since 2014. He stepped down as chairman of Microsoft in February 2014.