The title Distinctly optional, but a good idea anyway...
Actually, i know someone who works at Microsoft UK, and he said they all have iBooks and iPhones, but Woe betide anyone who dares to come to work with an Android phone!
Besides, MS seems to mostly be run by Lawyers, and their strategy for extracting money out of Android and Linux appears to be working, so why belabor the point. After all, ultimately, they care less about Brand image, and more about the money.
Apple however, seem to be run by a different type of people. Everything apple has done, has been done before, However, Apple did it better, which means everyone else is playing catchup. However, everyone else is catching up, and apple want to stop that.