In today's overall environment, and taking everything into consideration, I think it's extremely shortsighted and somewhat ignorant for anyone to question or wonder why any athletic event isn't selling out.
There are multitudes of reasons, and most have been brought up in these various threads. In addition to all of those... do NOT discount the fact that people are generally just getting sick and tired and becoming disinterested with everything going on right now in college athletics overall. All the powers that be are seemingly doing anything and everything possible to destroy the college game and experience.
Who is really interested in seeing Washington play Rutgers for just one example? I mean... it's only a 2,900 mile road trip! Who gives a f**k about that?
Or.. how about all the transferring? Don't dare to start giving a s**t or developing an admiration for any of the players on your favorite team... there is a decent chance they won't be back the following year... and might now play for 2, 3, or even 4 different teams in their career. Because now getting a free college education AND $200,000 a year might not be enough for a kid to stay at your favorite school. Someone else might offer them $500,000 the following year if they have a good season.
And finally... how about this new P2 system where basically only 2 conferences really matter. Now the B1G and SEC want to be guaranteed that they will each get 4 teams in the college playoff? Good riddance as far as I'm concerned.
I'll cheer on ISU forever... but it's hard to fork out more and more of your hard earned money for a team that virtually has no chance in this new system... losing their greatest rivalry games in order to travel nearly across the entire country... the game experience itself is getting worse... there is no real attachment to any of the players because they might be here 1 or 2 years at best... etc, etc, etc.
So for anyone to sit and ponder why games might not be selling out just have not been paying attention at all and need to wake up. Part of me hopes that college athletics suffers from all of this, and change is forced to happen... but that doesn't appear to be happening anytime soon. They continue to roll in the money... at least for now.