Uber's revenue numbers are awful. "According to Bloomberg, Uber had revenue of $415 million (we assume net revenue after payments to drivers, not gross revenue) and an operating loss of $470 million." That's for 2014, and it's leaked data. But it's not good. Why are they losing money? They're an app and a server farm, some "driver centers", and an admin staff. It's not like Amazon, with giant warehouses full of expensive inventory. They're already scaled out; the expansion phase is over.
[1] http://www.businessinsider.com/uber-leaked-financials-look-u...