I think random events of the type you are stipulating are less likely to impact high profile players. I have a large enough profit base that my reaction to any event should be mostly to tweak prices or occasionally route quantities at the margins, and otherwise weather the storm as a period of diminished capex. But, like, I'm not moving a base, and I'm probably not even canceling any routes if I'm convinced that they are still viable long-term economic prospects.
For example, I'm at -17 slots in Seoul (i.e. I am using 17 more slots than the airport would currently allocate me based on base level and loyalty). Expanding Seoul would cost $9.6 billion and create an additional $8.7 million per week in support costs. Ergo, I am simply never going to cut slots on any route to or from Seoul, for any reason.