Similar to working fast food for low wage, if the employee intends it as a career, the prospects may not be good.
These services were originally set up as fill-in work for an hour or two or maybe three when the individual had the extra time and as they desired. As with any job, if not happy with the rewards, simply stop doing it. No one is forcing them.
If I want to make a part-time job into full-time it might not work out. We shall see.
I wonder what a ride from the airpot to downtown or some metro destination might cost...
I used to travel all the time, used Uber and found that nearly every driver was new or less than 2-3 months. Discussion found that the work was unsteady and failed to cover the out-of-pocket costs to maintain their cars. The work was transitory as it was a losing proposition.