Then it's stopping you from working for a company that forces you to take clients at a given price without an employment contract and all its implications. What if that's what I want? I think some Uber drivers appreciate the work mobility.
I know that there are circles in which it is argued freedom means being allowed to sell yourself into slavery, but you'd hope the vast majority of us have come to understand the danger of that interpretation of freedom.
You want to be forced to take clients you don't want. You want someone else to decide a price you might not want. You want to be unable to get employment benefits you might want.
I mean, that's some niche requirements there, I would categorise it as serfdom.
I am onboard in principle - I want try all the psychedelics, fly a plane without a licence and experiment with explosives for education purposes, but as R v Copeland shows, the law can't cater to everyone - tradeoffs have to be made.
What you want is to work with a service that customers will choose to rely on. This implies that sometimes—to get the benefit of being "an Uber driver" and not just some random guy with a car taking people for rides—you need to accept clients you wouldn't have chosen on your own, at standard prices set by someone else. It's not that you wouldn't prefer to pick and choose your clients or set your own prices, but if you insisted on doing things your own way all the time you wouldn't have nearly as many clients since they couldn't trust your service and your revenues would be much lower. Uber sets standards for drivers, which means clients can expect a certain quality of service, without which they would be much less inclined to accept rides, even from the same drivers.
You can certainly take that approach if you want, though. As an independent driver you own all the capital equipment in this business (your car) and you can stop working for Uber at any point without penalty and start offering rides under your own brand, on your own terms. However, you'll find that you still need to meet certain standards as to price and reliability if you want people to choose you over calling an Uber. Working for yourself doesn't mean you get to do whatever you feel like all the time without any commitments.