I would add another point to that. Until a few years ago Apple built relatively expensive products and tried to make them good enough that buyers would want them enough to pay more. With Macs and to some extent with iPods that let Apple collect a nice big share of the market's profits, but not much of the marketshare.

Now, they've learned to make products price competitive without sacrificing quality or much of their profits. iPhones and iPads are not a more expensive option. They stay well away from the low end, but they are not expensive relative to the competing products especially those with similar specs.

Thats a whole other kind of strategy ('penetration' they called it at Uni) and maybe they're bringing it to the mac.