Like it or not, this is part of the game that's played in Silicon Valley. It's a high-stakes game to be sure and a lot of companies (perhaps most) are not going

Like it or not, this is part of the game that's played in Silicon Valley. It's a high-stakes game to be sure and a lot of companies (perhaps most) are not going to make it. But I suspect many wouldn't have made it if they tried to build a profitable business anyway because they're operating services that probably can't be run profitably (or very profitably).