Think about this scenario lol... The SEC will care if the others want to fuck over the SEC. All it takes is banding together and separating from the current model and excluding the SEC from their newly formed league and playoff. The SEC can continue to play FCS, maybe some G5, and have a conference championship game they want to believe is a playoff. Fact is that if all of the teams outside the SEC wanted to fuck them over... they could and it wouldn't impact them as much as it would impact the SEC. G5 teams and conferences are more likely to go along with the most teams or do their own league, before playing Switzerland unless the SEC wanted to pick them up, but those aren't big gets bringing in much money.
Again, it would change in a heartbeat if the Alliance wanted to utilize the leverage they actually have. You take 50+ teams garnering repeated attention all across the CFB landscape while forcing the SEC to continuously play the same teams or Mercer or Citadel all the time, no one outside the SEC will give a fuck.
I would agree if things stay the same.
Because the B1G would understand that by using this leverage it would essentially kill the SEC while simultaneously growing the B1G brand in a newly formed League/Conference. The money and players would absolutely follow. The SEC needs the B1G more than you homers might want to think and that Alliance, if chosen to be used as such, could kill the SEC.