The only way for cartels or monopolies to avoid competition over the long term is to obtain government protection.
the mafia obtains their monoply by killing off the competition. the government isn't the only player in the game.
i am aware of the austrian school of economics. and i agree with some of what they say but not all. and i am also aware of the henry george school of economics. and i agree with some of what they say but not all.