Outliers suggests it's neither the motivation nor the method we see as genius or talent, but 10,000 hours of practice combined with the "luck" of being in the right place at the right time.

While reading the Pyramid article, it seemed to me that both an amazing amount of practice and exposure to (or in) the right venue figured in.

What the Pyramid article seems to add to practice and luck is accelerated self-improvement through a feedback mechanism. Playing hockey needs a coach. Writing a novel needs an editor. Rapping needs an audience.