Umm, not really. They say there's no legal definition for 'abandoned game' but the EFF is trying to make one, as is permitted in the DMCA exemption process. They say that turning off online services isn't 'abandoning' the game... c'mon, really? They're 'only' making it unavailable and ensuring that the general public--who will collectively OWN all of this property when the copyright expires have no way to preserve their property from destruction.

Please also note that it would require a constitutional amendment to make copyright terms unlimited ... not that they're not trying to backdoor that by creating 'extensions' whenever some are about to run out.