I seriously doubt the federal government would allow one of the big 3 to fail. I also doubt they care about Spirit or Frontier surviving. Further, if more assistance is necessary, I seriously doubt anybody who is up for reelection (including the Orange Man) would actively cast off assistance to a big chunk of high-earning employees who, I'd guess statistically, are probably right-leaning voters. The right always talks about reducing defecits and cutting spending, but nobody actually believes it, right? CARES has made TARP look like Monopoly money. If reelection numbers look bad I would bet anything they'll ram through more relief.
Honestly, folks, we have to put our pencils down. There are lots of ways this could play out. Most of them aren't particularly cheery, but we are going to drive people in to HIMS (or worse, they don't join HIMS) with this kind of discussion. Things are bad. Hoard cash, cut expenses if you haven't already, and wait and see what happens. We can't really do much else.