[xorcist]

What is your basis for the $10T valuation, except for the fact that $220T is "probably too high"?

And what is your basis to conclude that if something works in San Francisco, it works elsewhere? Is the competition there so fierce that anything that succeeds that everywhere else can be considered an easy market?

[pbreit]

Just about everything that works in San Francisco works elsewhere. I can't think of anything that only works in San Francisco. Can you? There are hundreds or thousands of cities with similar transportation needs, many with already substantial Uber usage.

[domiono]

It's a rough estimate rather giving an idea of the market. What I want to say is that the market is not the $10B U.S. taxi market, but that Uber's market is probably in the trillions over the next 10 years.

[mariusz79]

Or $0. If you're talking about self-driving cars, you also need to consider that more than one family may share one car without any need for Uber, or that car manufacturers or dealers may go into taxi business themselves.

[xorcist]

... because?