#8. Brian Chesky
Estimated net worth: $3.3 billion
Back in 2007, Brian Chesky and his roommate Joe Gebbia were too broke to pay rent on their San Francisco apartment. To avoid getting booted by their landlord, the enterprising industrial designers decided to rent out three air mattresses on their floor for $80 bucks a piece. The sharing economy forefathers hobbled together a basic website advertising their crash pad for rent and the rest — a few setbacks along the way included — is history.
Eight years and a none-too-shabby leg up from Y Combinator later, the scrappy little Internet startup that almost never was puts an estimated 800,000 people up every night in some two million listings in 190 countries, reigning supreme in the coveted Silicon Valley unicorn club. Source