Many of those who favor online piracy (or who oppose restrictive laws meant to combat piracy, at least), argue that piracy does not actually hurt movie and music producers. They claim that most pirates would be unlikely to buy the products in question even if they were unable to download them for free. In restricting piracy, we aren't actually restoring revenue to the producers or anything of the sort. Those producers would be just as successful or unsuccessful whether piracy were allowed or not.
Is this sensible? Let's say that I download a movie. If it is really true that I would not buy the movie in any case, does that make downloading it okay?