Whereas many of the Apple fans, old and new, seem to like the way Apple/OS X works over both Linux and Windows.
It's not as if there's no cheap(er) Windows options out there, or more expensive Windows options out there. How come Apple's marketshare is growing YoY, especially in face of declining marketshare among general PC vendors.
And on top of that, the user satisfaction ratings are through the roof (heck, the iPad had a higher approval rating than Samsung's tablet *IN* South Korea last year).
It would appear that their choices are in alignment with their users more than anyone else.