At many schools, most larger P4 schools I imagine, there are ticket lotteries. Just heard about one person I know whose kid is at a P4 school as an undergraduate. Entered the ticket lottery and got a ticket for one home game. OSU has an enrollment around 67.000 but allotted 500 student tickets for the national title game (0.7%) of the student body. I suppose there's no way to fix the situation since revenue is king. To be fair, students have played a role in schools cutting the # of student tickets with some schools having a high no-show rate for games.