You are definitely right that Apple has a lot of leverage for now. I love my Apple products, as a user I have no intention of switching away from them (I stuck with them through their worst period, '96 - '00, because I was so excited for the coming of Unix). Again as a user I want them to succeed because I love the products.
As a developer though, I want my favorite tools and languages available. And I want to spend the least effort in targeting users...