The innovation here, and the reason the cab companies are up in arms about it, is that it's now on-demand hiring of private cars via phone. The cab companies used to have a lock on on-demand hiring via handwave or cabstanding.
I simply wanted to point out that regulating cab companies and selling expensive permits is a source of city revenue. If an innovative new business disrupts that revenue, it may quickly find itself the subject of new regulation.
Now, if their success is based on efficient routing algorithms and higher-class service, then they have nothing to worry about. If it's based on the fact that they don't have one of the cab companies' major expenses, then they're at significant risk of being regulated out of profitability.
http://greatergreaterwashington.org/post/2920/time-to-ground...
Personally I'd call that innovation. Clearly they're providing a service where there is demand. The law seems to be inadequate, so at the very least they're highlighting a problem for lawmakers to pay attention to.
How long before cities up their rent-seeking and require all hired transportation to have a medallion?