Brawl on Delta flight leads to arrest

Indeed. But airlines? Basic democracy would be a better place to start.

But real utilities like water, power, sewage/drainage (possibly internet/telecoms), railways, must be way higher up the list than airlines, surely.

Using your criteria, given “how essential they arefood is to modern life and to large swaths of the public” are you suggesting the food supply industry (supermarkets and food stores) should be treated the same way you wish airlines to be treated?
Fair enough, but that may be beyond socialist and verging on something else.