We at Sherpa has collected around 1M trips from Uber and Lyft. The average hourly rate of Uber driver is around $15 -- varies among cities. If you work 8 hours a day for 365 days, you will earn around $43,800. Of course, if you drive for 24 hours a day, you will earn as much as $131,400.

According to wiki: sharing economy is socio-economic system built around the sharing of human and physical resources. For ridesharing industry, the resources are drivers and their personal resources. Uber/Lyft/... are intent to become the gateway or dispatch or distribution layer to some extent. They are competing to "own" these resources and become monopoly. But for the drivers and the customers, it will always be in their interest to keep it a more "perfect competition" situation. Some third party shall come in to facilitate the conflict of interest -- maybe government, union or others.