I want to be clear here, and I'd appreciate it if you did not put words in my mouth. I never claimed rideshare drivers were slaves. I was questioning the degree to which the arrangement was beneficial to both parties.
If everyone was perfectly rational, I would agree with you. But many of these additional costs are hidden. Uber advertises ~$8 an hour, which sounds pretty good. But they don't mention the wear and tear on the car, the increased cost of mechanics, etc. I'm not convinced most drivers are aware of that or look into it.
Clearly it is somewhat beneficial for the drivers. $4 an hour is better than $0 an hour, but I still think it's worth pointing out it's not even minimum wage in the US.