Bad news for agencies
Well, they scr*wed the pooch on this one then. If they had left them powerful enough computers to drudge through the crud that is Windows, they would be running Windows, and thus ensure a backdoor to their entire national infrastructure like there is in practically any other country (which is one of the reasons I dislike any use of Windows in any government setting, but I digress).
Instead, the Russians have pretty much closed the door on them. Ironically, the US government and industry still runs Windows. Heck, even the majority of their voting systems do..