The Directors Guild of Canada represents directors of dramas and documentaries alike. We have an interesting internal debate. Documentary directors are copyleft. They want to use materials in the world, in all forms, in order to assemble film-based arguments in their own voice. They want the building blocks to create new films. They would like access to those original materials so that they can make new films at a reasonable cost.
On the other hand, the drama directors say they can't have their materials at any cost, other than the one that they negotiate. That's the market. They can't use part of a feature film for their purposes without paying for it. On top of that, there is a moral rights issue surrounding the purpose for which the film is being used.
I've had this experience. I made a film called One Dead Indian, and an actress in the film made a fantastic documentary portraying the Ipperwash crisis. She reportrayed it, using large chunks of my film. My only discomfort in all this is that it seemed as if my film represented the truth in her documentary, whereas in my film it was just one point of view, so the entire debate about the use or reuse of materials is a fascinating one within our organization.
As for the economic impact, I didn't need her to pay me, but if she had made a whole lot of money on it, I think I would have wanted her to pay, and my producers would have too. They would have flowed that money to me.