You asked why the autonomous five group couldn't implement changes different than anyone else. I feel like my response answered that. From a group level, there is no central governing body to bring all conferences together.tr
true. doesn't address my question in any way, but I certainly don't dispute it.
let me ask a more specific question
Do you know what, if anything, is stopping the B1G from autonomously implementing helmet mics?
To answer your separate question about why individual P5 conferences don't autonomously implement helmet mics, Klatt mentioned the inconsistent rules for OOC opponents, along with some coaches within the conferences honestly don't want it. Matt Rhule actually addressed this in his press conference this week and said that many coaches don't want to teach their QBs how to play the game. They want to call the formation, have the offense line up, and allow the coaching staff to diagnose the defense alignment and tell the entire offense what play to run from the sideline. You can't do that with helmet mics.