NCAA WHAT IN THE WORLD

I do not have a clue how the NCAA can millions on the backs of their student athletes and only allow them a fall scolarship. What happens if somebody wants to get wheels nobody can help them except their family, who are usually not in a position to help. What if they want to go out on town like other students, who are able to work to earn money unlike the student athletes. Ofcourse in a perfect all student athletes should be getting a deploma but that does not always happens and if they get hurt they maybe left with nothing and they loss their scolarship while colleges make millions. So why does a person like Reggie Bush needs to give back his heisman trophy award and a guy who got convicted of murder in a lesser court (OJ) gets to keep his.