compatibility, ease of use, stability, etc [/quotemsg]
Compatibility is strictly related to market penetration since product support is based on target audiences, ease of use is subjective as many would argue that OS X is basically built for dummies, and Windows is no more stable than OS X and Ubuntu 12. Granted that learning a new OS may be a daunting task for individuals but the suppression of complications with Windows is due to familiarity and not ease of use. The aggravation that Windows 8 Metro interface flared from veteran Windows users is evident to this. Lastly, business adaptation and utilization is the key to current and future utilization of an OS as professionals that spend a majority of their work time using a specific OS are more likely to use it in the homes. [/quotemsg]
Ease of use is subjective? To a point it is, but for a desktop operating system Windows is the easiest to use along side OS X, Linux is horrible for normal use unless your above average with computer skills because of lack of compatibility and user friendliness. Besides who would use Linux as a consumer desktop when Windows runs 99% of software without issues.
Windows 8 was hated on far to much, it's basically a refined versions of Windows with a new interface, like it or hate it, on top. I personally do not find metro appealing, but that does not mean it was difficult to use, matter of fact, it was incredibly simple(it takes a minute to figure everything out). I still find it frustrating to use Ubuntu and it's bloated and tacky new interface that is worse than metro, one distro to avoid.
Stability depends on the user. Users can cause the most damage to a system from ignorance.
Linux is to fragmented right now to achieve anything and OS X is restricted to MACS. I think all the operating systems have their good and bad sides, but Windows 8 is a very solid product that needs the interface refined. I don't see an issue with paying 80-100 dollars for a stable and fast product that you know will work and is compatible with 99% of software.