Origin stories often hinge on epiphanies. The stories told to skeptical investors, wary board members, inquisitive reporters, and—eventually—the public usually highlight a specific moment: the moment it all became clear. Brian Chesky and Joe Gebbia can’t afford their San Francisco rent, then realize that they can blow up an air mattress and charge people to sleep on it—that’s Airbnb. Travis Kalanick spends $800 on a private driver on New Year’s Eve and thinks there has to be a cheaper way—that’s Uber.