The article doesn't make much sense...

And if they are on SA, they should be able to downgrade to XP still - how do you explain the companies that have still been rolling out Windows 2000?

How does changing from XP to Windows 7, skipping Vista get affected by buying PCs with Windows 7 pre-installed?

That part fo the story just doesn't make sense.
If they are saying "wait another 2 years on XP, then upgrade to Windows 7", then yes, the story has a point; but going from XP to 7, whilst buying PCs with 7 pre-installed?