We shouldn't lose sight of the fact that this ruling applies only to private colleges and universities. Imagine a future football landscape in which private institutions take the field with players who are unionized (and compensated), while public schools don't.
Second, I don't see how college football players can have it both ways. If they are "student athletes", then a scholarship covering schooling and living expenses without further compensation should be enough. If they are truly "employees", then they may be deserving of compensation, but they should also be subject to paying for their own tuition, books, transportation, food, housing and all other living expenses. They should also be required to meet the same academic entrance standards as all non-athletes who are accepted at the school.