Unfortunately once you open that door, there’s no way to cap, monitor it, or honestly enforce it. Not that the NCAA did a good job of enforcing it or punishing it to before NIL.
I don't think anyone had a problem with players earning their fair share. It’s just virtually impossible to do it fairly from player to player and university to university. Most of us knew it would become an arms race between the haves and the have nots. Some of us were even smart enough to know where Iowa stood in that arms race, sadly.