Depending on who you ask, people will tell you companies should be run by either MBA types or engineers. Jobs doesn't seem to fit either of these archetypes. Of all the big tech execs, he has to be the strongest systems thinker.
I think outside of the business success and technological innovation at Apple, one of Jobs largest contributions has been to bring the 'design process' to the center of management. Engineering has great models for problem solving, as does management theory, but design thinking is often the most overlooked. Its not given enough credit. Often when people talk about design they are really talking about aesthetics. When Jobs talks about design, he's talking about process. Hope the book sheds light on this.