They said: "However, sometimes your solution is focused solely on server-side operating systems, and that's where Linux falls short."
(http://www.whymicrosoft.com/Pages/linux.aspx)
I only remembered a joke:
"Microsoft is not the answer. Microsoft is the question. "No" is the answer!"
(via nixCraft - https://www.facebook.com/nixcraft/photos/a.431194973560553.114666.126000117413375/911435992203113/?type=1&theater)