There aren't any hard and fast rules for a situation which has so far been totally unknown to modern humankind. What may be perfectly valid for one person or company or geographical region may be totally implausible elsewhere. Assuming that everything and everyone everywhere in the world will follow the same pattern is a wild oversimplification.
However, since we already have some observations over all sorts of localised crisis, this allows for some conclusions. Some processes which dramatically change the landscape happen on a local scale in different places all the time. Destinations that were once looming with travel have been isolated from most of the world and devastated in past years due to wars, annexation etc. At the same time, others have flourished (compare the Middle East from a couple of decades ago VS what you see now). So, your individual prospects depend not only upon your skills, personality and reputation, but also upon where you are situated and how willing to relocate you are if need be. Some places will recover faster than others, some will exceed 2019 traffic levels relatively soon while others might never do. Some companies will do better than others, some will not survive at all. The question is, where exactly will you fit within that puzzle. It might not be exactly where you have imagined yourself, but you will sooner or later make it work if you so desire.