I'd be fascinated to learn what a previous employer will do with all the vbscripts I wrote on Windows XP to drive various things of theirs. They have to maintain things for 20 to 30 years and they are basically snapshots in time. When I was there in the mid 00s they still had a Windows 95 test bench that ran software that only worked there. So I guess there's my answer: they'll keep the Win XP boxes around as long as they need to.