content: Extras usually have to sign waivers to be able to act. So I don't think either of these scenarios are going to happen. I think people are just going to be more careful about making sure actors with the small parts sign the waivers. And regarding the actors in the more prominent roles, how do their contracts work? I think they too waive their rights to the movie. I think it's the production house/company that holds them. So I don't envision this scenario happening very often, if at all.