If they didn't negotiate the right to exercise league rules into the contract without being (directly) penalized, then they're fools.
And as I've stated previously, if you kick the other 6 teams out you can make whatever rules you like regarding investment to weather the revenue storm. You can even make them without kicking them out, if you word them right. But I wouldn't recommend setting the precedent of permitting what are functionally bills of attainder aimed at some of the members to hit the table, if I were advising them. That's a big red line to cross.