At USCjr it was more than luck with just a few recruiting classes; Ray Tanner was a great coach who also had a nice run from 2000 to 2004. Went to 3 CWSs in a row from 2002-04, with a runner-up in 2002.
I 100% agree with you that the real head-scratcher in college baseball is UGA. They really should be one of the more accomplished programs in the SEC (up there with LSU/Arky/Miss St), if not the entire country. Hell, they should be pretty good historically at basketball too. I think they have a little bit of a Penn St/Ohio St phenomenon going on where the entire apparatus (admin, fans, boosters, etc.) care about nothing other than football.