Oh, there's a bunch of dudes who are/were great wrestlers that never won NCAAs. Here's a few that come to mind:
James Green (7,7,3,3)
Thomas Gilman (2,3)
Townsend Saunders (2,3) *NOTE* Did win an NCAA DIV II title so not sure if he can go on this list. What the hell, let's give it to him!
Ken Chertow (3,3) - I'm sorta on the fence with him
Russ Hellickson - I don't remember him doing much in college. Decent freestyle career - got picked on by the Russians but who didn't!
@fishbane already mentioned Bobby Weaver and I'm 100% on board with that. I remember he lost to Gene Mills in college once but no shame in that