If I don't like a part of your movie, I can fork it and make it better. People collaborate, and the system tracks their share in the project, and when the movie makes it to the cinema, TV, Netflix, etc., they are remunerated accordingly.
Initially, a resistance is to be expected in the established distribution channels, therefore a new distribution channel is to be built. Perhaps a P2P on pay-if-you-like basis. Do you like your new Firefly series? Do you want it to continue, to thrive? Then contribute as much as you see fit. Contribute financially. Or submit screenplay ideas to the project. Make the 3D CGI scenes better, add more details, make animations more fluid. Offer acting - maybe you will be selected by the audience in a democratic process.
This must be funded, filming equipment and studio time is expensive, rendering time in the cloud is also not entirely free. But once the equipment is purchased and studios built or contracted, the projects can share them.
Go get 'em.