http://bits.blogs.nytimes.com/2014/04/17/uber-faces-rebukes-...
"Oh lets operate in Paris and not pay the licensing fee for a taxi service." Etc.
They've been completely and/or partially banned by more markets, larger markets than the entire country of Colombia at this point.
It is the same thing as AirBNB. You build the software service and then hire out contractors who don't comply with local laws and rake in the money.
I don't see that as a good, sustainable service at an evaluation larger than the entire US taxi market in the US. http://www.ibisworld.com/industry/default.aspx?indid=1951
They are going to hit like AirBNB was and have to play by the same rules as everyone else which will squeeze their margins. :/
Maybe this speaks to my bias against people who bend reasonable rules for profit.
Also, many of the people who were looking into investing agreed with that: "The bidding for Uber was so heated that some venture capital and private equity investors bailed out after the valuation soared beyond $10 billion, according to people familiar with the situation, who asked not to be identified because the talks weren’t public."