I once blocked a driveway in SF by accident (tiny garage door and the curb was still there), and I ended up having to pay near $1000 to get my car back a few ho

I once blocked a driveway in SF by accident (tiny garage door and the curb was still there), and I ended up having to pay near $1000 to get my car back a few hours later. Where does the money go? I remember being disturbed that the towing lot appeared to be privately run.