When Dropbox had its first ever IPO last year, it was valued at $12 billion . However, just 11 years earlier, its founder was pitching the startup's business idea to well-known business incubator Y Combinator. Did the incubation program contribute to Dropbox's success? Notably, as reported by FiveThirtyEight, only 11% of Y Combinator startups have died, and other program participants have included Airbnb and Reddit.