In Server environments Linux is #1 at over 36%, Windows has 33% marketshare.
In the smartphone and tablet market Linux (Android) is again #1 at over 49%. Windows share is under 2%.
In the Top 500 Supercomputer Market Linux dominates the market with over 98% of the installs.
I develop software across many platforms. I find the windows vs Linux arguments a bit petty. However, we should be more careful and present factual data.
Have a good night.