The economics of airlines, being so asset-heavy with leased equipment and ongoing maintenance, puts them in the position of not being able to scale up and down easily or park all the aircraft, so the only short-term solution is to continue a sort of forced musical chairs, flying aircraft with a virus mitigation strategy, while they unravel the extra assets to right size the airline for at a minimum, another flu season. Regardless of where the broader economy goes, airlines are going to have to shrink to a level where it will take them years to achieve what will be seen in the future as the glory days of 2019.