The barrier to full scale realignment Armageddon right now is the ACC GOR that goes through 2035. The one solution to that would be a full scale power grab coordinated between the B1G and SEC to kill off the ACC and grab all the power and money. Individual teams cannot get out of the ACC GoR. But I believe if they can get 10 schools to vote to dissolve the conference, the conference and the GoR are dissolved.
The B1G takes Virginia, North Carolina, Clemson, Georgia Tech, Notre Dame, and Florida State.
The SEC takes Virginia Tech, NC State, Miami, and Pitt along with Texas and Oklahoma.
That would give them 10 votes needed to disband the ACC. And creates two 20 team super conferences that hold all of the power and control.
Not likely to happen, but it would be fascinating to watch the war it would create.