They could decouple the salary cap from the revenue for this season and next season if it's based on previous years revenue. Seems like an easy problem to solve.
Ok, but if the revenue is down 50% for this upcoming season either the players or the owners are taking a huge hit to the bottom line. The salary cap is based on total revenue and the players get about 54% of this now. Every team would be massively over the projected salary cap which has been rising by about 10 million a year for the last few years.
For example the Brennan Family could not decide who was more important and wound up shutting down instead of figuring out how to split $32 for a couple of eggs.