That's what people said about Dropbox. You'd have to know their grand vision to decide whether they can become real businesses. And even then, you'd have to bu

That's what people said about Dropbox. You'd have to know their grand vision to decide whether they can become real businesses. And even then, you'd have to buy into it. I'm confident YC is not investing in any company without a shot at becoming a multi-billion dollar business.