No, they don't intend to — not that they don't seem to care. If you read the actual MacWorld interview with these guys, they clearly explain their thinking. iOS and OSX are disparate but connected in their vision. They see Mac and OSX as intrinsically important to the future roadmap. Mavericks has a ton of forward-thinking new features with regard to power consumption and so forth, showing that they do care quite a bit. "Microsoft on the other hand..." — Yeah, we'll see.