You're thinking like a politician, whose law is a hammer and who sees every issue as a nail. Before regulating, let's see if the free market can't work it out way better by itself. And indeed it can, it's called competition.

Amazon itself claims to be "customer centric" because customer trust ensures sales go up in the long term much better than short gain of abusing the customer relationship. Look at this very thread for more evidence.

Maybe if you didn't need an army of lawyers fighting bureaucracy to found the tiniest company a competitor would already have beaten them. Maybe that's why Amazon feels it can afford this kind of business practices. Your intentions are good but your solutions are not.