Congratulations, you've now figure out how the world works: via power and influence. You're 18? 21?
You mean like the * next to all the times enhanced by innovation in nutrition and recovery practices over what Clarke and Mills utilized in the '60s or Pre and Shorter and Rodgers did in the '70s plus Joanie in the '80s? What about the advantage in the training improved through innovation? Better training and performance enhanced by professionalism in not needing to do other work for income? Or what about all the marks resulting from EPO, CERA, hGH, testosterone doping? Because almost any WR or NR you want to reference, including the current AR for men's marathon, is touched by some combination of those protocols that escaped detection or weren't outright banned at the time. Also note that drugs evolve through innovation as well and the dopers are always a step ahead of the testers. At least with the shoes, it's all out in the open and using the shoes poses no harm to the users' health. So no, continuous innovation in the shoes (which will happen, there's distinct incentive in it) isn't all that's necessary for marks to continue improving.