Airlines make their money on business fares...Let's talk about the airlines. As someone who infrequently travels, and usually just for personal vacations, I've long felt the bread and butter for so many of the major airlines were the businesses travelers. What happens when that travel goes kaput? And virtually all that's left is personal travel? Expensive airlines and all the accoutrements they come with that cater to well-heeled business travelers...lots of downstream consequences from this freeze (for the foreseeable future) on non-essential travel.
...and they still are always teetering on the edge of bankruptcy.
To answer your question: it’s not looking good.
The airline industry has been wrecking employees from multiple business for decades. A specific example? When airlines stopped paying commissions for ticket bookings...it put a large amount of travel agents out of business. The internet had something to do with that too.