People became the fastest billionaires in the shortest amount of time

Pierre Omidyar – 3 years

A pre-dotcom bubble billionaire, Pierre Omidyar co-founded eBay in 1995, and helped make the online auction site the massive business it is today. The French-born entrepreneur and philanthropist garnered billionaire status in 1998 following eBay's IPO, and served as company chairman until 2015.