Right, so just dumping cars wherever isn't tolerated either.
This is patently false, as not only public entities (i.e., law enforcement and local governments) but also private companies (private tow operators) create and invest in specific services to address the problem.
So,once a whole industry emerges to tackle a problem then obviously something is being done.
They also frequently sweep up any tents put up by homeless people.
I used to frequently see a meter maid waiting by a car parked right outside the office, until the hour turned and he could ticket the whole row.
In both cases, it's part of your civic duty to report cases like these. There must be a phone number in your city that you can call when you see someone parked a car (or a scooter) in a place where it's a) illegal, and b) is causing troubles.