Because people (especially in the US) couldn't care less about other people, regulation that annoys consumers is "bad", and the consumers then defend the companies breaking those particular laws. Those companies exploit the fact that in every industry, consumers always outnumber providers (or conversely, every person consumes from many more industries than those where they provide), and so the disregard for this kind of regulation will always work. Every new company will get consumers to gang up on the far fewer incumbent providers until they break the regulation that protects them, and so on, industry by industry.
It's a little like the robber barons, who used every new wave of immigrants to beat up the previous generation of immigrants who tried to unionize, and then hired the new ones in their place... that is, until the next wave of immigrants. Except the new way of doing this is far more effective, because it's always easy to obtain a majority that supports you and feel like they're doing the right thing at the same time.