Most 'naive' consumers probably won't even try to solve the issue with bloatware. For many of them Windows implies having to deal with bloatware-full, cheap laptops.
In the end when some bloatware crashes or slows the pc down, people blame windows.
I know that that's windows' business model, but makes you think how much they would benefit from having a rock solid image.
Just look at windows 7 for instance. It is a rock solid OS but that doesn't seem to have done a lot for microsoft's image. (Or maybe it has? Links welcome.)