By the time you reaches college, you typically:
1. have enough data to see how quickly you're improving;
2. are exposed to a much wider pool of talent than you were previously. Chances are there are many people at your level of athletics that are far better than you; and
3. are exposed to a much more difficult environment than high school and middle school. Combined with 1 and 2, many athletes lose the desire to work that hard for so long.
For athletes that aren't in the upper tier of college athletics, reality has set in even earlier.
I like to think if that term never existed then maybe society wouldn’t let universities exploit them for millions of dollars while paying them nothing.
If they play the same game but no one makes money they are free?
So really, what’s decided regarding eligibility will set the precedent going forward. Hopefully it won’t ever have to be referenced though.