It benefits them from a stability standpoint. They realize - financially - they are a second tier conference behind the BIG and SEC and their individual members know the BIG and SEC don’t want them so they aren’t all trying to jump ship. So collectively they have accepted their lot and are focused on trying to make the best of it.The fact that the SEC and the B1G don't want any teams from the Big 12 isn't exactly a good thing. It means that the Big 12 is a conference filled with a bunch of meh teams.
The PAC hasn’t come to either of those realizations which is why they are at risk of going down in flames