Are you sure? Btw I said one reason; I didn't say the only reason. I mentioned another reason : ability to use 3rd party hardware. Even then it's an opinion. It is NOT a fact. So you cannot say that I'm wrong, unless I stated a wrong fact. I would be wrong if I said pi = 6 and not 22/7. So get your RC right.There would be a load of other factors.
Ask any man on the street : Whether he would use Windows OS or Linux? The answer would be a unanimous Windows, and the most common reason would be because they find it easier to use ( Most people on the street wouldn't even know what third party hardware is). I'm a comp science student. Most my my mates in class found Windows easy to use in comparison to any OS. Everything feels intuitive on Windows XP - can't say about Vista and 7.
FYI : I still use Windows XP. I have used both Vista and Windows 7, and I will say that they are nothing but power hungry monsters which are not one bit easier to use than XP. My friend has bought a Windows 7 laptop, with i 3 processor and 3 gigs of RAM, but my 5 year old laptop with core 2 duo processor and just 1 gigs of RAM is much more responsive and easier to use. It's a pain in the butt to find anything on WIndows 7 and Vista.
I have used Linux ( the fedora flavor and the Ubuntu flavor), which probably the best OS if consider security issues etc etc , and Mac OS, but I found XP to be the best OS - not because of graphics, but because of ease of use.