So I agree that while exploitation by monopolies is possible (in the extreme, just via slavery or indentured servitude/debt peonage), I think we have mostly taken care of it via social support mechanisms. If that's true, then further intervention in markets doesn't seem necessary. Of course, I still would support health inspections, etc to root out local corruption since it's too hard for the public to monitor that themselves. In a sense, the fact that voters approve the FDA and other inspection-style measures is just them commissioning someone to do that for them, and that's okay.
But when it comes to California coming in and saying that Uber drivers shouldn't be allowed to voluntarily work as contractors, it seems really strange. Drivers like it and the company likes it, so what's the problem? Yet the state still wants to intervene in the relationship.
Your characterization of SF's social safety net seems (charitably) hyperbolic, I think you need to diversify your news diet.
> I think we have mostly taken care of it via social support mechanisms
As with labor elasticity, these are again at historical lows. Basically since Reagan we have gutted our social safety net and replaced it with tax cuts for the employers who then take their extra capital overseas.
> Drivers like it and the company likes it, so what's the problem?
I don't know who you're talking to, but drivers definitely don't "like it". They need it, yes, but the ones I've spoken to seem to have major problems with Uber who has stonewalled them for years.
Overall it sounds like we are starting from very different assumptions about the state of play in the labor market right now, not sure if we're going to bridge this in a comment thread debate. Have a good one!