The B1G would never kick anyone out, but the cream of the crop nationally will eventually leave their conferences to form a college football super league, maybe within the ambit of the NCAA, maybe formally outside of it. I'd give it about ten years and I'll bet you that final blow comes more out of desperation and fear of revenue decline than seizing a new peak.
Conferences died as a concept yesterday, after a long illness. There are only schools and broadcast partners now, with a couple of zombie league offices as momentarily convenient middlemen.