Russ was smart. He realized that the Seahawks are Veach-like in their ability to draft players and didn't want to continue playing there any longer. With the player empowerment going on now, chances are Mahomes will eventually come to that same realization. Probably once Reid either leaves or can no longer cover up his GM's mistakes.
I mean, look at these recent drafts:
https://www.pro-football-reference.c.../sea/draft.htm
EDIT: I forgot about Mahomes’ stupidly long deal. He would have a very hard time forcing his way out.