If you're Marshall, McDermott and the like, why wouldn't you stay put - they make coin, they are the man, and they have a chance to compete and win, not only league titles, but national titles and it's likely they've got more security than at a P5 gig where fan expectations are routinely out of whack.
Go to OSU and you're always second fiddle to Football. You're always going to be compared to OSU football and Urban. That guy is top 5 every year (I haven't looked at the rankings during his tenure, but you get the idea) and you'll be measured against that with the fans - that sucks donkey dick.
If I'm a guy that has had sustained success at a "mid-major" the only job I'm leaving for is Kentucky, UNC, Kansas, Duke, UCLA - salary, brand recognition, tradition, recent success, #1 sport on campus, facilities, P5 conference affiliation. However, if I'm a guy that has had one or two good years, I jump at the chance to leave to a P5 gig - i.e. Andy Enfield FGCU to USC.
But I know next to nothing, so after writing this watch Jay Wright or Mark Few make the jump to OSU.