1 lockdowns will be much longer than we think with clusters on releasing them.
If any lockdowns go on for longer than the 12 weeks that's been mooted, talk of which airlines (or businesses of any type for that matter) will survive is irrelevant. We will see civil disobedience on a massive scale, total civil disorder, rioting, looting etc. In other words a total breakdown of society.
The question that governments will be asking in the next few days and weeks will be "Is the cure (lockdown and all the damage that goes with it) worse than the disease? (Which we'll probably catch in the end anyway)
I'm quite sure governments are already asking this question. I think it's pretty clear that the total collapse of the global economic system and the abject misery and untold deaths that it will cause is worse than this virus, at least in its current form. Of course, it's not particularly politically expedient to tell the electorate "Sorry, there's nothing we can do to help if you get the virus. Best of luck!"