I can see their point, but unfortunately for Microsoft the business model that brought them their riches has this side effect. Microsoft's best course of action may be to actually deprecate the "Microsoft" mindshare and push some of it to the OEMs so that when Vista is broke a user will say "My Dell is broke" and "Dell screwed up Vista" instead of "Vista is broke."
Which could have the end effect of pushing Dell to pre-install Linux on their machines...or nothing at all... and tell MS to go stuff it.
Not that's there's anything wrong with that.
Good luck getting people to put the blame on anyone else. As evidenced by most of the tech pings, as soon as the word "Microsoft" is mentioned, you have a very vocal group of people who delight in a knee jerk reaction of slamming MS for everything real or imagined that's wrong with the world. No matter what the thread is about even if it's not even about a problem, there is always someone who says "The way to fix the problem is to use anything other than MS". Some even go so far as to bring MS into conversations just so they can have something to bash.
You ain't kidding. I buy OEM computers because I spend to much time on the road to build machines at home. The first thing I do when I get a new machine is pave it with my own image. Casual users would be shocked at how much better their computers run without the "value add" bundled crapware they install.