I think in the early days, Jobs' presence and persona were a stronger driver of Apple's success. The company survived thanks to a "fanboy" dedication of a cohort of self-described "nerds" who loved the niche aspect of the brand, and how identifiable Jobs was.
However, in recent years, I think the importance of that segment of Apple customers has been severely diminished. Quite frankly, they're simply grossly outnumbered. Now that Apple has gone mainstream, its customers include a much broader swath of society. Specifically, people who never really cared who was running the show, or about the history of the company. They just thought iPods were "cool."