They are providing a solution, if you look in the article. It just will be slower. As will those for the other OS, I expect. They are simply taking advantage of it to try to get more people to upgrade.
If MS can make Vista and Win 7 operate effectively, they could also provide a patch for XP!
This is my point. MS doesn’t want to do this because they are a predatory company, trying to force payment for upgrade.
The real story here is the huge number of corporate XP computers that are being targeted by MS!