if faced with a choice between money and their "ethical ideas about their university", they will choose money. every time.
michigan will not sit by and let their football program not be a part of the next wave of reorganization if the alternative is to fall out of the top tier.
likewise, the top tier will make every offer to get michigan involved because of its name, huge fanbase, rich alumni, and tv drawing power.
get the pac 12 involved and poach some east coast schools from the acc.. north versus south (and we get california).