Some pretty eye-popping statistics: https://www.usatoday.com/story/sports/2017/12/14/college-football-bowl-game-revenue-sharing/952646001/
ESPN won't be able to meet that obligation for long. Cord cutters and the network's liberal politics are dropping their revenues like a stone.
The above is what's standing in the way of an 8 team playoff. What Scott said is what may wind up making it more likely to happen in time.