It's getting a little crazy.
Let's think this through. What are the motivations for joining a "P5" conference?
More money
Access to CFP
Set aside the B1G, B12, and SEC for a moment. If your goal is to get into the ACC, but you're giving up the money for 5 years, and the ACC may no longer exist as a "power" conference in 5 years because the B1G, B12, and SEC are going to poach most of your teams, isn't there a significant risk that you will both make no money over that timeframe and ultimately lose what you perceive to be better access to the CFP?
While the G5's access isn't as good as in a P5 conference, it seems like there's momentum of guaranteeing G5 teams at least one, possibly two, spots in the CFP. So if you're making no money and have similar (admittedly not equal) access to the CFP in the AAC, is this all worth it?
Seems to me like the snooty officials at Stanford and Cal, and the desperate boosters at SMU, haven't really thought this through. I guess the gamble could pay off if the ACC sticks together? But maybe I'm missing something.