That's a great point. To add to it, as Uber grows, it'll take on weight and inertia and become as rigid, bloated and inflexible as other successful Fortune 500 companies. They'll have departments, and department heads who want good quarterly numbers and will not want to rock the boat too much. They'll have shareholders who'll want a good return and not expensive moonshots. And I mean that all in a good way. There's nothing wrong with that. WalMart didn't miss out by not building a search engine 10 years ago. It's not what they know.