After all, it is a direct competitor to the US Postal Service.
After all, it is a direct competitor to the US Postal Service.
I think that's the key detail
Besides yellow cabs there are also private livery cabs aka "black cars/car service."
"CURRENT OWNERSHIP: 17 percent of medallions are owned by cab fleets; 54 percent are owned by leasing agents, who delegate management to fleets; and 29 percent are owned by independent drivers"
There are also other municipal needs like collecting utility information from radio systems or pavement management surveys that cities often drive around to collect - Uber could potentially be utilized for data gathering if it was determined that they had sufficient coverage etc.
Every GIS nerd would love a data set like the Uber tracks for analysis and to see what else they could be used for (Uber for mass license plate collection is like something from Black Mirror).
Instead of imagining uses for their data, let's realize it's their data that we have individually given them and we may not want the city - any city - to have.
Remember Uber's (terrible) "Rides of Glory" post describing how they could detect hooksups - http://www.whosdrivingyou.org/blog/ubers-deleted-rides-of-gl... ?
Now imagine that in your local government's hands.
The same argument can be made about Facebook's data. I don't think that justifies making it public.