There is a strong history of associating the identity of the school with its football program (though I expect this to wane as we learn more about the long-term impact of concussions). Let’s take Ohio State as an example: it is more compelling of a mid tier graduate program because of its success on the football field.
I don’t say that as a knock on OSU: they have fine academics. But being a Buckeye is very connected to the football team.
Same with Alabama. I currently live in Birmingham and when I relocated I was asked all the time, “whose your team?” That question only has two acceptable answers: Auburn or Alabama. There is no option for “none of the above.”
But I still expect this to wane given a long enough horizon. From a sample of one, I used to be very involved in college football and NFL fantasy football leagues. But over the last five years I’ve become less comfortable with the sport (it feels like watching a Roman gladiator match). I’m [edit: bearish] on the 15 year horizon for the sport: I think we’ve reached peak football.