Earlier quoted context omitted.
I don't really find this relevant in the US because airline pricing is already the ultimate brutal form of pricing. Not only are they allowed to bill you whatever they want, they are never under any actual obligation to put you on the plane.
This seems surprising to me. I was under the impression that airlines are pretty low profit margin industries, pulling in only around 3-4% in a decent year, and that of that the airline tickets themselves are the lowest margin items percentage wise, with other things like baggage fees being much more load bearing.
Most of the more profitable markets have high competition not only by other airlines but also other forms of transportation. Very few airlines are swimming in cash and even those are only a couple bad years away from bankrupcy.