I mean you're right that I don't know Riley personally or anything. I should have put "in my opinion".
But don't you agree that generally, coaching in the NFL, which does a pretty good job of creating parity, is a more challenging proposition than coaching at blue blood college school?
Why risk all the great things Riley has working for him in Norman, to go to Dallas for example, where he might inherent some talent, but then the whole team could fall apart in just a year or two? That's what happens in the NFL (except in clam chowder country). It's really easy to go from 11-5 to 7-9 with just one bad FA period.