Would a Yahoo acquisition finally mean the end of the last Viaweb accounts?

Yahoo! is still running the Viaweb lisp based systems for users who never "upgraded" to the rebuilt Yahoo! Store version. Unless it has change recently, I believe paulgraham.com is still running on that system. How long do you think it would take after a Microsoft acquisition before the last Viaweb accounts would finally be shut down? Any chance they could get the Viaweb code to run on Windows? (mostly joke, partly serious)