Although true, it's really only a problem because of OEM lock in. If there were more options to choose from when purchasing a new PC then the monopoly no longer exists and people would just choose not to have that crap installed on their computer. The problem is most people don't know any better and think the only two computers in the world are Macs which come with OS X and PC which is Windows.
If you think about it, Microsoft can do whatever the hell they want with their OS. It's the vendor lock in that's the problem.