The minimum wage in California (the subject of the OP) for companies with more than 25 employees is $13.00. I know you were trying to be conservative in your estimate and I don't know if that $10-20 range you're referencing is for California, the USA, or all Uber drivers. Maybe the real average is higher than that, but it's wrong to present $10-12 as a "perfectly normal" wage for workers in California.
I just think it's overly dramatic when people present lower wage jobs as literally serfdom or whatever- especially when the HN crowd has undoubtedly eaten out, had drinks, hired a contractor, got coffee, or employed a cleaner that was probably making the same as an Uber driver. There will always be low wage jobs. No one's picketing coffeeshops for making their employees 'serfs', why single out Uber?
https://www.businessinsider.in/the-32-places-uber-and-lyft-d...
Also keep in mind that pretty much no minimum wage job except ridesharing allows you to earn to and from your way to work.
If you make $13 and hour on an 8 hour shift in California with a 1 hour commute each way and a $3 bus fare each way, it comes out to $9.80/hour not $13.
All of the estimates I've seen range from $10-20 an hour after all of their expenses are factored in. Let's be really conservative and take the bottom quartile, so Uber drivers make $10-12.50 an hour.
That's.... a perfectly normal wage for tens of millions of people. Have you eaten a meal out or gotten a coffee, ever? That's how much money the people behind the counter were making. Did you feel like you were contributing to a 'serf class' when you bought a coffee this morning, or bought dinner last week?
And if these people weren't employed by Uber, they'd be working for $10-12 an hour at a different employer instead. Kind of by definition, they lack the ability to earn more money in the market (especially this job market!) because if they could they'd already be doing so