820
Linux Desktop Market share keeps increasing, 3.19% now. +0.07% for August
(gs.statcounter.com)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I can actually imagine a scenario where MS actually wants that to happen. They don't really make money on windows sales anymore (comparatively to their other products). So this could free up quite a lot of resources and reallocate them elsewhere.
The majority of home consumers basically just use browser services anyways.