I'm not sure this is true forever. Things get wonky when truly innovative schemes come into play and the early adopters pull themselves up. It really gets wonky when an early adopter is a somewhat traditional power. This iteration of football is absolutely becoming cemented, and it is harder for early adopters to hide the changes then previous, but it still happens. Things are locked in now until some new great idea rolls over football. The wishbone, Air Raid, 4-3 defense are all examples people used to great success in prior iterations. The last time Illinois hit on one was Mike White, and then they squandered it.