At first, I was sort of annoyed to read about this. Then I thought it a bit more.
Our first goal should be to sell out the stadium to all RU fans, except a tiny amount of predetermined "away" seats that all teams do. Nobody can argue that. And for sure, RU ticket reps should not be encouraging selling to opposing teams' fans. It'll happen anyway.
Our second goal should be to sell out the stadium to anybody so we get the revenue. This will often mean, in the short term, that we sell tix to opposing team's fans. That kind of sucks. I don't like it. But revenue is revenue. And again, RU tix reps shouldn't be pushing the idea. Let it just happen.
Finally, in the event that a lot of opposing fans do get tix to one of our home games, I'm consoled with the thought that we may well win the game. Which means that the more fans of opposing teams there are at the game, the more there are that will be sent home greatly disappointed. A nice bit of compensation for us having to put up with having away fans at our home game to go w/the nice compensation the away fans gave our athletics program by buying our tickets.