I think that this has a lot to do with why scoring is down. For the most part, kids are going to college from H.S, where they dominated and really did not play against good defenses; however, the step up to college often shows that they were scorers and not necessarily shooters (for example, it is clear, at least to me, that Troy was probably more of a scorer, given his superior athletic ability; whereas, JBJ is clearly a great shooter with a scorers mentality). The good ones move on to the NBA after a year and the schools are left with players who probably have not adapted or adjusted to more intense defenses.
I am still not sure why people want to make it like the NBA. The NBA is one of the worst products out there, in my opinion. No one plays defense and typically there are two passes or less (usually less) and a shot goes up. They don't really do a lot to move the defense and most of the time, it is someone just trying to create something out of nothing. The NBA was a lot better when you had more refined players (those with 3-4 years of college ball)being drafted.