> There are probably a bit too few customer and worker protections, but on the whole, airline deregulation shows just how bad command economies are at planning and allocating resources.

I would say that it demonstrates that, where competition exists, deregulation can achieve some pretty good results. It's worth noting that consumers can choose which airline to fly every time they fly and the cost of switching is non-existent (absent loyalty programs which is why they're called loyalty programs).

It's also worth noting that since airlines are pretty critical infrastructure, when there's an economic downturn and the government bails them out, the government is essentially subsidising the discounts of the previous 10 years and generally doesn't do it for the very small airlines that aren't too big to fail so it's also still a bit government-ish.