How do you know this is true? How do you know that everyone who downloaded the movie or game wouldn't have purchased it? If some would have purchased it - how many is too many? Who decides how much is too much? You?
Have you ever done or seen any research on this? I have -- and there are plenty of people who will pay for software when there's not an easier or more convenient way *for them* of getting it for free. But if getting a pirated copy is easier then that's what they'll do.
What right does anyone have other than the right-holder to determine if infringing the copyright is ok?