What do you mean? Why do you think people use Microsoft's software? Without sounding too snarky, I think a large portion of Microsoft's users are either corpo

What do you mean? Why do you think people use Microsoft's software? Without sounding too snarky, I think a large portion of Microsoft's users are either corporate users who are locked-into the MS ecosystem, or are users who are unaware of the benefits of other (IMO superior) OSes. I mean to say that Microsoft has benefited from being the de facto default OS for most normal consumers. This is changing as OS X and Linux distros become more mainstream.