I think he meant "dominant" market share, of course a new product needs a plan to create and/or take market share. But Apple (under Jobs anyway) is much more interested in profit share, nowadays they own maybe 5-10% of the computer market but their profit/unit dwarfs any other manufacturer.

On the lock-in I'm with you, but I do think the whole iTunes store/Fairplay was a happy accident that the music companies forced Apple to do. The music companies inadvertently helped Apple lock consumers into the iP*d platform, Apple leveraged it for the app store that pundits/developers were demanding (remember when iPhone first came out and the outrage about having to use web apps?)