I think we’re looking too much at the Disney model for how to run a major studio.
Disney hasn’t successfully launched a brand new live-action IP in at least a decade. You have Marvel, Star Wars, Disney live-action-based-on-old-animated-films.
That’s why it’s so easy to define Disney as a studio. You just define their several planks.
Universal, WB, and the others have been trying to launch new properties. It’s why they don’t have solid planks like this. None of the other studios have cemented themselves into buckets in such an extreme way as Disney.