Somewhere in this thread or another is a recent post of programs that have the most players in the NFL. It is the usual list of suspects up at the top. Players go to these schools the same reason the best students go to the top schools for their education. It is a long term investment into their perceived professional career. They aren't worried about playing time as a FR. They are looking at what schools increase their odds of making it to the next level. I imagine Derrick Henry makes it to the next level if he chosen to play at Fort Valley State, West Ga. or Dayton. But, otoh, practicing daily against the cream of the crop has to help one hone his or her craft.
Will the NIL level the playing field somewhat going forward? That is debateable but I am usually in the "more things change, the more they stay the same" mindset. meaning no matter what, Bama, Oklahoma, etc. will always find a way to remain at the top level.