Team sport. Bush is part of a team. Talent can only do so much. The other 21 guys had a lot to do with his success. The school and the taxpayers fork over a lot of money so he can got to USC (it isn't cheap to go there you know). I just believe he owes the school, not the other way around. Without them he won't be were he is now.
If it were a perfect world, yes, this is how it would work.Trust that Bush did more than his fair share to help put asses in seats; sell programs; sodas; popcorn; jerseys; foam fingers; hot dogs; T-shirts, etc. I do not think the program was getting by on bakesales before he got there or will be doing so after he leaves.
Oh, he took home a Heisman too. Lot of money for the USC athletic fund and an almost infinite amount of recruiting publicity for Carroll.
At a program that large a successful a player like Bush is part of the team but he is also above the team. Thinking otherwise is naive. That was a mutually beneficial relationship and I am pretty sure the books are even between Bush and USC.