Guess Syracuse got tired of my Louisville Cardinals whipping their ass in the Big East every year and had to run from Mr. Pitino.
Unfortunately, it's all about football. B-ball is an afterthought (and the other sports are less than that).
The superconferences are a huge money maker in football. So much so that most of the big schools make their entire athletic budget back just from the TV money they get/split.
The B-ball money pales in comparison.
I'm sure Jimmy B wasn't jumping for joy when he heard the 'cuse was leaving the Big East. That conference is a B-ball DREAM (and a nice recruiting tool). But I'll also bet the AD listened to his objections, saw the truckloads of money being backed up to his office, and promptly ignored the objections.
Besides, it's not like the ACC is chopped liver. But I know I would NOT want to be the new guy on the block in NC/Duke territory. No thank you.