To me the whole copyright extension issue is a good argument for justification of piracy. If the copyright industry side can just replace the social agreement (protection of works in exchange for them going public after a reasonable amount of time) with one they like more, why would it be immoral for the content consumers to to the same? I'm talking about the ethical side, not legalities. The fact that said consumers…
There's very little pirating of content that is over 20 years old, so I'm not sure how the copyright extension thing would justify piracy...