Another data point for the "beer wars" with @mattyglesias @jasonfurman are airports. Airports, including Newark, SLC, and Portland by law mandate "street prices" (i.e., ban price gouging). The question is: do airlines raise ticket prices in response? I doubt it, but don't know. Above all it shows that at issue is a complex and empirical question, not something solvable with pure economic theory and a few "moves" that renforce the dogma.

This is an example where there are regulations, not voluntary action. In theory, the lower prices for food in the airport might increase demand for the flying experience, thereby giving airlines room to charge more for tickets. But does it happen? I have doubts. Cheap food on flight might do the same, but it still seems like a maybe.