Puts the onus strongly on player evaluation and subsequent development to offset the risk of signing a superstar who's trying to command a huge contract. Big high-profile busts could wreck their cap spaces for years, help increase parity between programs. E.g., the situation at Oklahoma earlier this year with Spencer Rattler; they would've had to spend a lot of their cap to land him on the open market, probably with a 3-4 year contract. Whether it was a bust on talent or character evaluation, or both, he would be huge dead weight they'd have to deal with, way worse than the loss of that single scholarship even if he never transferred.