Given that due to security regulations it’s no longer possible to resell a personally unused ticket (though the airline might refund part or all of it) it’s not like hoarding tickets would happen. So it’s a little different than passing out so many bottles of water. All the seats will get used by people who need them (who is going to joyride in such a situation?), and a lottery might make sense for public relations purposes. People liken capitalism to gravity as equally inexorable forces, and it’s true insofar as it goes, but we also note that gravity does not mean we are condemned to do nothing but lie upon the ground all our lives.
Hoarding wouldn’t happen, but you’d still be able to price out the less from more desperate.
As for the lottery, really it’d be like a stupidity tax on the airline. It wouldn’t make for a better functioning economy, just a means of assuaging a misguided morality based on ignorance.