Many have argued that the ACC can't last until 2036. There are many scenarios where the members could vote to dissolve because it could be in their best interest. Let me lay it out so you can play it out:
B1G: FSU, Georgia Tech, UNC, UVA
SEC: Clemson, Miami, NC State, VPI
Big 12: Louisville, Pitt
Scraps: Duke, Wake, BCU, Syracuse
This or similar alignments are very unlikely but there is the potential. And should something like this happen, some programs will be left in the lurch. They just might think it would be better to proactively find a long-term solution than to take a chance on missing out. Louisville and Pitt for example would probably be just as happy in the secure Big 12 than in the unknown ACC and want to tie that down rather than risk one of the other scraps going that route first. Does Pitt really want to hold on and miss the boat on the chance that Syracuse flee first? It's every man, including the old bag, for himself.