For decades, students at Michigan games were assigned seats, with the seniors getting the best ones. But for some games last year, a quarter of the 20,000 or so people in the student section were no-shows. So, athletic director Dave Brandon decided to switch them to general admission – first come, first seated -- to get them to show up on time -or, at all. The students went ballistic. Yes, some can display a breathtaking sense of entitlement, and they won’t get much sympathy from the average fan, who has to pay three or four-times more. But before we bash the students too much, perhaps we should ask why they’re not showing up. Punishing your paying customers for not liking your product enough is probably not something they teach at Michigan’s Ross School of Business. The athletic department hasn’t asked them, but I have a few hunches. Because tickets are so expensive now, and games take so long, the current students didn’t go when they were kids – which is when you get hooked on the