Unlike lightsabers, seats in stadiums don't "hold over". You must sell each seat or the potential revenue is wasted. There is no advantage to an empty seat. It's just lost revenue. Now you do want to sell each seat for as much as possible, and each seat has a somewhat unique value which you want to capture.

A better parallel is airline tickets. They want every seat filled, but they play games to capture the most revenue for each one of them. For college football, however there is another twist: you want to maximize TOTAL revenue, not stadium revenue. That's why we mess with the game day's fan's experience to accommodate TV.

Obviously, the current economics are that you maximize TV revenue and try to get as much out of stadium revenue as you can get without sacrificing any TV $s.