But there's no way they're going to see those return on late stage investments? For Uber to 10x from their current market cap, they'd have to be worth ~$700 bn.

But there's no way they're going to see those return on late stage investments? For Uber to 10x from their current market cap, they'd have to be worth ~$700 bn. That seems hard to achieve, let alone multiples in higher orders of magnitude.