This is a false analogy. Kodak's revenue stream was not protected, but people were prohibited from stealing their film. The film business disappeared because of

This is a false analogy. Kodak's revenue stream was not protected, but people were prohibited from stealing their film. The film business disappeared because of alternatives that the market preferred. The case of content is different. Free content is not taking much market share from professional producers. A small subset of people are illegally stealing professionally produced content via torrent sites, but that group is small enough that it's still economically viable to spend $50M to make a great movie. If we eliminate copyright, that group grows large enough that nobody will spend $50M to make a movie, and the big-budget movie will disappear. The big-budget movies don't disappear because people don't want to see them, or because free content has displaced them in the market. They disappear because so many people steal the content against the wishes of the publisher, it's no longer economically viable to produce the content at all.