I would only be confident about arguing, say, 2-3 years max at present. I don't really know about at the beginning of this console generation though, since the conditions would have been different. Maybe a little longer for the PS3 given that it cost a thousand bucks (second job lolololol) but difficult to be certain without further information. Practically speaking courts would be conservative on the issue of reasonable expectations since any court declaration would set precedent and all...