Why? When you look at the future CFP projections, they are making close to what they would make in the B1G and they remain independent. I don't see it. Especially if they get NBC to tie in with the B1G deal so you have a noon B1G game followed by a 3:30 ND game. That's being discussed and their $15 million a year from NBC will go up.
I wasn't sure why they stayed independent until I saw this chart:
They make $15 million per year from NBC, and then about $10 million from the ACC. Add the $45 million above, and you get about $70 million. That's less than the $100 million+ they would get from the B1G, but they are a wealthy school, and they get to keep their independence.