"But the conference network model as we know it today is going to be drastically different in the coming years."

I think the B1G and SEC Networks are will continue current profits as long as the cable bundles are around and people are being too quick to jump to true unbundling. But it really doesn't matter too much because there will always be a disparity between B1G/SEC and others regardless of delivery method (as you stated). I agree that people are being too quick to break up the ACC over just broadcast $ distribution. It means something for a school to be a part of their respective conference but only in the B1G, SEC, ACC, and Pac-12.