[rolltiide]

In the book "The Chickenshit Club"

There is some psychology amongst the regulators that results in them not fining or sanctioning large players because they don't want to make them go bankrupt and further consolidate the market.

You can have a monopoly in America, as long as you don't do anticompetitive things to get there, and don't do anticompetitive things while you are there from within your company. (protip: the trick is to change the laws and regulations to favor advantages you have and make it impossible for new entrants)