You don't need supply limitations to safely regulate something. Look at food safety in kitchens. I think it's in practice used as a political excuse to justify

You don't need supply limitations to safely regulate something. Look at food safety in kitchens. I think it's in practice used as a political excuse to justify a cruder political reality of creating a limited supply to create an environment of exploitation to extract money from in the first place. Taxi medallion holders are often a strong force in many local political battles for election. When I talked to a taxi driver in Canada about his situation for example, he told me he has to pay $3000 at the start of the month, like house lease, and therefore he is $3k in hole. It basically forces him to work non stop doesn't let him do things like take one week off, because he couldn't rent the car for 3 weeks for example. It's one month or not effectively. At least with something like uber he said, he had flexibility, and I get the impression he would of made a similar amount anyway. Also similarly, a lot of drivers prefer cash and pretend their card machine is broken. The laws say one thing, the reality is often another.