I would fully expect the NCAA to try and do something to eliminate teams essentially giving scholarships to walk on players through the use of NIL money. That is certainly not what this NIL thing was supposed to be about, but I am not surprised one bit to see it heading this way.
In the end it will come down to how much the dollars really end up being. Guys aren't going to give up the chance to play just to make a little bit of money in college. Ultimately, most Power 5 level athletes believe they have a shot at the NFL (whether they really do or not), and you aren't going to get noticed by the NFL by being buried on the depth chart at a place like Alabama.
When it is all said and done, many of us want to just make it about money, but that isn't going to be the driving force for a lot of players because they NIL money they would make in college is unlikely to be anything life changing for the vast majority of players. Only a small fraction will see the massive deals that will get all the attention. The rank and file players aren't going to be offered enough to totally abandon their dreams in order to ride the bench somewhere for a couple grand.