People like having a figure-head. Someone or thing to attribute success or failure to. Look at the office of the President. People expected Obama to rush in and fix everything, put people into homes, and make America some sort of utopian society. Is that likely? Is it even possible? I highly doubt it.

True, without the Woz, Apple would be nothing. That doesn't mean that Jobs is nothing. He's the figure-head of Apple. If Wozniak had've taken the position that Jobs now holds, there'd probably be many people preaching the gospel according to Wozniak.

It's much easier to personify a company through an actual person. A company is sort of the amorphous blob that does things. You may never know exactly how a specific company does certain things, but having a person to attribute that to certainly helps. It's not exactly right, but it's not entirely wrong either.