Exactly, i don't know if what type of user he is but usually a normal person is satisfied with the microsoft OS and aside from that they are widely known as well for their ms office it is i guess the most widely used editing type. They have actually a good products and that is why they are still on the market right now as well as the founder.
I have used various operating systems including Windows, IOS, Fedora, and Ubuntu. I found Windows the most user friendly. For tech savvy people, Ubuntu may be better, but the vast majority of the remainder is going to chose Windows.