[WJW]

I think a major part of the calculation for Apple here is that there are also people who will weigh Apples willingness (or not, as in this case) to host this type of content in their decision to buy Apple products or not. Not the true fanboys of course, but interesting economic decisions are always made at the margins. As long as more people shift towards Apple than people shift away because of this, it's a win for them.