You can not say this with any certainty. It may be unlikely, but to say it definitively is just your opinion...period.
Ultimately, it comes down to the economics, etc. of challenging the GOR, with the large risks of the uncertainty that exists, lack of precedent, etc. "Iron Clad" etc. gets thrown around a lot, but there are instances where legit arguments can be made to void such agreements.
In my past life, I dealt with many hold-harmless agreements/contracts, etc. that were alleged to be "iron clad" only not to be the case in reality. For instance, you can not pass negligence through a contract, etc., it makes the contract null and void.
Another thing that make contracts void is a contract that goes against public policy. In FSU's case, as a public institution, they (as well as other publics) probably could make an argument(s) along these grounds, etc. albeit, still very high risk vs. current/present day reward.
As time moves on, and the high risks ($$$) of challenging the GOR becomes much lessor, etc., it would not surprise me one bit if the legal challenge is commenced.