Imagine only one person could make a whole movie without hiring anyone else even voice actors. Think of the holodeck of startrek where only one person is enough to make a holomovie. . What would happen? Will Hollywood or Bollyhood for that matter survive?
Hard to say.. our AI ain't that advance. Even we feed near countless of hours of movies into its database.. What it generated might feel off or awkward Do you ever try listen or read novel generated entirely by AI?
Maybe, if the movie good enough to do that, which is highly unlikely (but there is a small, tiny chance tho)