First of all, you need to distinguish between (1) not being able to recruit highly ranked players; and (2) those players not performing up to expectations.
We have two five star kids on the team (Irvin, Chatman), a couple more four stars (Wagner - Rivals' main guy said he would have been the equivalent of a top 40 guy, Walton, Wilson, Donnal), and a few other, low ranked kids who have far outperformed their rankings (MAAR, Robinson). On paper, we have plenty of talent. If guys like Irvin, Chatman, and Walton had played like their predecessors (Tim, Glenn, Caris, Trey), this team would be just fine.
Yes, recruiting has been a bit disappointing since the title run. But your expectation is apparently that we should be landing multiple five star kids every year. Good luck with that. There are maybe 25 of those kids every year. Some portion are without question looking for money (UK, Kansas) or other benefits (think Louisville). Some simply want to go somewhere where they don't have to attend class (see UNC, Syracuse). And some are legitimately recruitable, but we've lost out to Duke (Kennard) or another power (Booker).
I think we are now returning to our comfort zone - the top 50-150 - and I like the guys we're getting (Simpson, Poole), and are after (Cain, Young). I believe we're capable of winning big with those guys.