"Why is it legal" is the wrong question. There is nothing wrong with freedom. You already know this. The problem is the lack of competition. You should be askin

"Why is it legal" is the wrong question. There is nothing wrong with freedom. You already know this. The problem is the lack of competition. You should be asking why is the competition so small for this particular service with bad terms that you can't find a better place around you that provides a better service.