Exactly - Apple products are expensive - despite their usability, not all users are willing to pay a premium for that. On the other hand, if there was a highly

Exactly - Apple products are expensive - despite their usability, not all users are willing to pay a premium for that. On the other hand, if there was a highly-usable free alternative to Windows (which Linux seems like it's well on its way to becoming), that might be a different story. Of course, being free, Linux doesn't have the marketing budget that Apple does - so I don't see it stealing too much of Microsoft's market share any time soon. (And then of course there's the fact that Windows machines are actually subsidized by Microsoft, making Windows effectively cheaper than free. Plus all the other factors that make folks Windows users - the proprietary software, use in schools, etc.)