Way back when I used to have a fading thought that some smaller private grandfathered schools (ex - Wake, BC, Northwestern, etc) deciding that the new costs of competing would be too expensive and decide to drop out. But with all of the revenue streams these revenue suckers get just from playing sports in these conferences, albeit not very well, and with these costs being mostly determined school-by-school, the small private revenue suckers can continue to pocket their Power conference money and decide to not adopt every single expense (i.e. - put more money into their pockets). Similar to how bottom feeding MLB franchises would pocket revenue sharing money into the owner's bank accounts instead of putting the money back into the organization product, I envision these schools will do something similar. Because FOI doesn't apply to privates, noone would be able to pry the info as to where the P5 money is going. And if these P5 conferences all sell their CCGs for even more money, that is extra cash that these revenue suckers can put right into their endowment (or BOTs comp packages).
So yeah, not even the small privates with limited fan support would voluntarily drop out of the new model. It's essentially free money to keep doing what they've done for decades - suck.