They're doomed, and the collapse in travel and discretionary spending could take a lot of property owners down with it. On the plus side this might clear a lot of greed out of the property market, allow prices to return to a saner median, and relieve the housing shortage that obtains in many places.
Like, I hope the AirBnB trend slows down greatly for all of the reasons you listed, but they exist because people don't have the need or ability to pay for more expensive, temporary lodging.