As always, copyright is a supressor of creativity, not an enabler. Copyright terms should be 10-20 years max, or up to death of an author. Even current regime is ridiculous.
If you're going to save money by not coming up with an original idea for a movie, or video game, or whatever, and then use the public goodwill produced by an existing work to market it, it seems perfectly just that the original creator gets a cut of that action.