Pixar's tightknit culture is its edge
37signals.com
37signals.com
Disney has had Disney University for many years (http://thedisneyblog.com/2006/01/30/pixar_universit/). And the results are clear: the most creative thing Disney has done in years is buy Pixar.
Pixar was damn creative well before they ever started the University. They didn't start mundane and become brilliant. They started off brilliant thanks to brilliant people at the top (and middle and bottom too).
Then again, if they did that, maybe I wouldn't be so damn determined to make it independently!