[prostoalex]

> More users (i.e., your friends) drive higher service levels (more Uber drivers and quicker service times, which spirals).

Considering how many drivers are signed into multiple apps (and that will be the law of the land if Uber wants to keep them as independent contractors), there's also a bit of network subsidy - top network adding liquidity to its competitors.

[pitnips]

But how many customers are signed into multiple apps? I don't think very many. And even if competition forces prices to go incredibly low, only the biggest players will survive. Uber's scale will allow it to weather low prices, especially since they just rake in transactional fees without requiring significant investment.