Let's be honest -- outside of University of Nebraska sports, what do people in the state of Nebraska have to cheer for or attend their games?
Michigan doesn't get a lot of people to go to their Spring Game, but they also have the Lions, Tigers, Pistons and Red Wings all playing within 30 minutes of Ann Arbor. If Michigan football was the only ticket in town, I'm sure they'd be filled up as well.
And as someone who has had season tickets at some point in time for the Lions and Tigers -- I know ALL ABOUT being really shitty. I was a season ticket holder when the Lions went 0-16. That was painful.