Market penetration has little relation to overall quality. Apple has always been happy with a smaller slice of a huge pie.

Macs have outsold individual PC makers since ever. In the end, though, there are so many PC makers that Macs have a small market share. The same is happening here - a dozen manufacturers agreeing on commoditizing their software and differentiating in hardware will, eventually, relegate Apple's exclusive platform to a very lucrative, but relatively small, niche.