Great post and though I knew Nebraska was one of a select few for it's athletic program to be self-sufficient., most schools can't claim this. BUTTTTTTTTTTTTTTTTTTTTTTTTTTT...............I started to write a response to your post, @dparks, but it was growing into a Tolstoy novel, so I'm going to save that for something else. Suffice it to say that from the university presidents' perspectives, the grant funding dwarfs the money that comes and goes through athletics. I don't know the exact number, but it's somewhere around a majority of B1G programs don't turn a profit from their sports programs, so investing more into it is often an attempt to cut the costs in the long term as a return on investment. Wisconsin needs state funding to keep its athletic department afloat. Most schools aren't like Nebraska where the athletic department contributes to the university. Only a handful of programs are like that. The funding that is symbolized in AAU status (and those really are the labels that matter: "symbol" and "status") is much more concrete in their eyes.
I could go on for pages (literally), but that's the gist of it. If you want to read the full story, send me a PM, and I'll get you something longer and less edited.
Now you have it where the B1G has come out and said, "Notre Dame would be the sole exception for not being an AAU invite school."
I call that hypocrisy, where no schools can join unless they are AAU except for this school. Again, IMO, the B1G is just painting themselves into a corner.