The NIL "Clearinghouse" is challenged and blocked within days, IMO. The NCAA hasn't won an NIL limiting case and won't win on the "Clearinghouse" either.
The "revenue sharing" contracts will first be blocked because it's not fair to have the NCAA and schools decide "this percentage is enough revenue sharing for players" without negotiating with the players. A non negotiated team cap, IMO, will never last because only one side, the NCAA and schools, decided what was fair compensation without the other side, the players, being able to negotiate their idea of what's fair compensation. There's nothing fair about a group of schools deciding: this is what we should pay and all we're going to pay.
That's collusion to limit the athlete's compensation in the marketplace. That won't last either, IMO.