There are certain industries that require more government intervention/oversight/support/whatever by the very nature of the industry. In the early days of this country and in Europe at the time, fire companies were privately owned concerns. Only people who purchased protection got water thrown on their houses in a fire. If the fire spread to the house next door, and that owner was not a member of the fire protection society on the scene, it was allowed to burn. If there were not government-run police forces, I doubt most of us could afford to purchase protection from a private "rent-a-cop" company.
Public transportation appears to be in the same category. Whether local, state, or national, there seems to be almost no way to provide transport from Point A to Point B at an affordable price and make a profit--Southwest Airlines being the most notable exception to my broad generalization.

And, this not a new phenomenon in the airline business. We can't blame the current ills on the current government in D.C., the last one, 9/11, or the oil companies. It's been that way almost from the beginning. I've posted this before, but it applies. One of the founders of British Airways said many years ago..."If you have to tighten your belt, it's a recession. If you lose your belt, it's a depression. When you have no trousers, you're in the airline business."
Now, that being said, it would still be possible to "let a thousand flowers bloom" if we choose to not care about the consequences of unbridled competition. Such as, 10 transcons an hour all day everyday from JFK to LAX and no service whatsoever to/from Omaha. Airlines would go out of business left and right because prices would be so low that no one could make a profit. Then, when there was one airline left standing, it could charge whatever it wanted to move you from Point A to Point B.
In such a situation, none of us could afford to fly. It would be like the early days of the airline business...very wealthy people, such as movie stars, were the only people who flew. Everyone else took the train or, if they couldn't afford that, a bus. Or,
they didn't go, which is what most people did.
Well, that's the way a free-market economy is suposed to work. Unfortunately, the airline business is one of those vanity-type companies where some man with more money than sense (see also, Carl Icahn and Donald Trump) believes that he can make a business work where others have failed.
For whatever reasons, and please let's not get into a liberal vs. conservative political argument, we as a society have decided that is not acceptable. What is more worrisome is that I think airlines have been put into the "too big to fail" category. Granted, if my airline, AA, were to close up shop there would suddenly be a lot more people on the unemployment lines--and not just AA employees...there are a lot of ancillary businesses, such as caterers, that are dependent upon the existence of AA.
I think the years since deregulation have proven that the airline business does not lend itself to total deregulation and a free-market-winner-takes-all approach. Perhaps, a hybrid structure might work. Controlled prices on monopoly routes...some price flexibility on routes that have competition.
Most of my family lives in Alabama. My sister's grandchildren lived in a suburb of Las Vegas while her son was stationed at Nellis AFB. We once found an interesting anomaly in pricing. She is on my non-rev list, but was concerned about getting from BHM to DFW on a particular day, but not being able to get on a flight from DFW to LAS. I suggested she non-rev BHM-DFW and purchase a ticket from DFW-LAS and back to DFW with a non-rev listing from DFW back to BHM.
What we found was that a coach ticket could be purchased from AA.com BHM-DFW-LAS-DFW-BHM for less than a DFW-LAS-DFW ticket. In effect, not only was her BHM-DFW legs given to her free, by buying that ticket, she got a discount on the DFW-LAS-DFW portion. Does that make sense?