Even with infinite funding, hits are not something that just scale up infinitely. Talented showrunners, cast and other production staff only have so many hours

Even with infinite funding, hits are not something that just scale up infinitely. Talented showrunners, cast and other production staff only have so many hours they can work before burning out/running things into the ground, and you can't duplicate them with more hires. The standard strategy is to fund spinoffs of popular franchises. Marvel is a good example of this taken to the extreme, where there literally is a constant content stream.