Regarding Apple’s philosophy versus market share preservation:

The most important thing to Apple is to make the best products in the world that enrich customers’ lives. That’s our high order bit. That means that we aren’t interested in revenue for revenue’s sake. We can put the Apple brand on a lot of things and sell a lot more stuff, but that’s not what we’re here for. We want to make only the best products.

Macworld’s Transcript of Tim Cook’s Q&A From Yesterday’s Call