Well, us techie types would probably reload it, that's for sure, but average people would probably just use it.
Most would not even care whether its Linux or Windows anyway. My Brother just last week got off Windows 98 after it because unusable because of virus and crap. He NEVER updated it and didn't have virus protection and it lasted at least 8 years (Last time I installed it for him before moving).
He didnt have the money to get XP and lost his 98 CD, so I installed Linux and he really doesn't really care; as long as it works. He was amazed at the speed of the machines after the reload. He was going to go buy a new machine and was glad I saved him over a thousand bucks.
This is what most people do, and I believe that is why MS produces crap software; after a while, people will just buy another PC and another license because the computer is running slow.
Most people will be that way; as long as it works and they can do what they want with it, they don't care.