Assuming arguendo, that Alliance moves forward.
If I Ran the Zoo, or the SEC whichever, my response would simply be, "Ok, Cool, Hook 'em."
Then, I would approach Clempson and Florida State and tell them, "hey, we are leaving the NCAA, forming our own Association, will have our own separate rules, games, playoffs, oversight. Want to come play with the big boys?
Then, I would approach Ohio State, Meatchicken and maybe include State Penn and tell them, "hey, we are leaving the NCAA, forming our own Association, will have our own separate rules, games, playoffs, oversight. Want to come play with the big boys?
Then, I would approach USC, Oregone, Stanford and maybe Washington and tell them, "hey, we are leaving the NCAA, forming our own Association, will have our own separate rules, games, playoffs, oversight. Want to come play with the big boys?
I would then tell all universities that along with the athletic alliance, we are developing an academic alliance where once a university has reached certain academic and research standards, they join the academic alliance where libraries and research can be shared, where there is a somewhat open exchange pertaining to grad students and professors could openly collaborate on important studies. And part of that academic alliance would be funded by the increased revenue brought in by the television contracts and related revenue.
Some will say nyet. Most would recognize that it is in their long term best interests, financially, athletically and academically and say "Da baby."