Honestly, most really successful college coaches in the past 30-plus years who have tried to move to the NFL haven’t been successful, and most of them have wound up quickly going back to the college ranks. Spurrier, Saban, Petrino, Kiffin, among others, found out that coaching in the NFL is very different.
In college, a head coach is effectively a coach/GM, and a successful one is pretty much the absolute ruler of his program. You’re coaching a bunch of guys in their late teens and early 20s, who see you as a father figure. In the NFL, you’re almost undoubtedly dealing with a GM, who probably hired you, and who has a lot more control over team decisions. And, you’re coaching players who are probably making more money than you do, and are a lot more independent-thinking.
Long way of saying that Meyer would have probably been smart to stay in the college ranks, or on TV. He’s now helming a team with a history of losing, and an owner who may be considering trying to move the team.