It will work for a while but not forever - that exactly describes the US airline industry. They not only need business to come back, they need it to come back at a certain rate. Things (ie zoom, which I use as a shorthand for any telepresence option) that slow down the rate of demand rise are a real threat. Saying "eventually ..." isn't relevant. At current rate, eventually every airline is gonna furlough 2/3 of their pilots and then hit chapter 11.