End Airline Protectionism: Allow Foreign Carriers On Domestic Routes

Authored by Ryan McMaken via The Mises Institute,
In the wake of the United Airlines debacle - in which the airline had airport police assault one of its own customers - customers have begun to ask why there doesn't seem to be more competition for United to contend with. They ask: would United treat its customers so poorly if they had more competition?
Maybe not.
Is the Airline Industry Competitive?