Jeff A Wright, while I appreciate your response, I choose not to accept it. Like pixelbruin said, there was never any indication that this was going to expire. There must be some way to rectify this, as I don't see this as a particularly smart move on Adobe's end. Of course I realize that you likely have nothing to do with this personally, please understand that you're currently our sounding board here.
Behavior like this honestly seems to promote piracy of this legacy software. Wouldn't it make the most sense to simply reissue a new key (which costs the company literally nothing) and let everyone move on with their lives?