Jobs was a user with the power to pay others to design and build things that he liked. He was also a gifted speaker and salesman.
I think his lack of technical knowledge was key to Apple's success, because he did not know when something was "too hard to do". I've always said that Apple should hire a replacement like him, and give the replacement the same ultimate decision power.
+1. I completely agree with sentiment that his lack of technical knowledge was one of his greatest strengths. He wasn't encumbered by the minutiae. He also motivated his troops to get his vision done. I have no commentary on how he motivated because I've heard both positive and negative things; neither of which I know to be true... or false.