Don't worry. The cream of both P2 will leave the rest behind in some format, the dumb luck will run out. Superleague is coming.
Only way it doesn't happen, imho, is if the P5 (or whatever is left of the major conferences) band together to create a new variant of NCAA just for football -- maybe spurred on by paying players, NIL, needing anticompetitive immunity and thus a players union, etc. But there is so much "me first" its hard to imagine the SEC or B1G offering to share/help the others rather than press their advantage.
I know Sparty will say "they would never leave" but if the Superleague suddenly was paying $300M per team per year, and the B1G contract was only $80M, is it impossible to imagine OSU, PSU, even UM doing that? IMHO USCLA have proved everyone can be bought.
That said, I HOPE I am dead wrong, and a new NCAA-type body is formed so CFB can be re-invented to manage the NIL and players getting paid, while maintaining competitive balance, the nationwide yet regional relevance, and the traditions that make fans love it.
Let's wait and see how the 12 team playoff works. If the P2 are only getting 5-6 in per year combined, then other leagues might look more appealing.