As someone who has been a supporter and developer for MS products for decades, I'd like to say a few things...
First, desktop Linux currently has far more than ".8% market share" (that's simply a fact). Furthermore, Linux's uptake is the fastest growing in the marketplace (which is why Microsoft is, so obviously, scared silly). And, if you are talking about handhelds, mainframes, Internet-servers, etc... Linux actually is, already, a primary player.
Second, "fragmentation", has nothing to do with this issue. Netflix, did not need to limit the devices that ran their "app" because of, alleged, fragmentation. That was, apparently, yet another stupid decision made by this, recently, seemingly intellectually-challenged company ...not to mention, that it is amazing that trojan-writers didn't seem to consider, so-called, "fragmentation" to be much of a technical-hurdle.
Additionally to refer to a trojan, from an unauthorized pirate website, as any kind of real security-lapse or market-problem which could (in any rational way) actually be related directly to "Linux", is absolutely asinine to the point of being nothing but the sensationalist FUD... which this clearly is.
Simply put, for the most part, so-called "Linux fragmentation" poses absolutely no more compatibility issues than Microsoft's endless treadmill of software "versions", "MS standards", market-manipulation, arbitrary changes, and "updates" (especially compared to the major Linux distributions).
Furthermore, we have just been forced, by Microsoft's "compatibility" issues, to abandon reliance on the latest -versions- of "Windows" for many of the applications, tools, and utilities that our technology company relies upon. Now, I'd call that "fragmentation".
Furthermore, every recent version of Windows (and, yes that is including "Vista/Windows-7") has so many, well-documented, security-issues, REAL viruses, trojans, and stability problems... that no honest comparison can (in any reasonably way), seriously, negatively denigrate the quality of Linux, these days.
And finally, in most people's opinions, the maturity, efficiency, and usability, of Linux (compared to MS-Windows) -is- at least comparable to commercial, proprietary, software (in virtually all meaningful ways).
