The solution is to create the marketable package with 9 games which could possibly lure ND into full time participation or push them out for a better full time member. The NBC deal with ND is not a lifetime agreement.
NBC stuck with ND when they sucked. So there is no reason to think that NBC will pull out anytime soon.
Several years ago, there was an article that talked about how the ND athletic dept made enough money that they were donating around $1M every year to the school. As long as the AD is running a budget surplus, ND might not even be interested in joining a conference even if it could offer a better TV package.
BTW, where do you expect to find “a better full time member”?
