Do 99% of other college students partake in an activity that requires 30+ hours of prep a week, that brings millions of dollars to the school?
No, they do more than that. Real students actually study and attend classes and spend a lot more than 30 hours a week doing that so they can become educated and get jobs after they graduate. A good academic reputation brings a lot more than millions of dollars to a school.
These so-called student-athletes should have been reading the rules and paying attention. If they didn't and they're not getting their stipend, that's on them. They get more preferential treatment than any other students, and they don't deserve it.