In the increasingly risk-averse business of Hollywood, the best way to get a film greenlit is propose a rehash of something that's been done before—a superhero sequel, perhaps, or a mash-up of two hit movies, like Elf meets The Godfather. Warner Bros. Discovery CEO David Zaslav: This battle is in a sense David (Ellison) versus David (Zaslav)—though they more closely resemble Goliaths. (PATRICK T. FALLON/AFP/Getty Images) ...