The big risk to the airlines will be when, having been forced to use video conferencing rather than physical visits, businesses realise that much flying is unnecessary and merely serves to allow staff to top up their frequent flyer miles.
Is this one of those "repeat it often and long enough it will come true" things? I've been hearing it since at least the early 90's...
The problem is face to face works better than video-conferencing, it just does. Contrary to popular belief, most organisations aren't totally stupid and most people aren't on business travel for the laughs or the air miles (it would imeasurably improve my "well-being" if I never saw the inside of a train again...), they just know what works.