One thing to keep in mind is not so much that AI would replace the work of video creators for general video consumption, but rather it could create personalized videos or music or whatever. I experimented with creating a bunch of AI music [1] that was tailored to my interests and tastes, and I enjoy listening to them. Would others? I doubt it, but so what? As the tools get better and easier, we can create our own art to reflect our lives. There will still be great human art that will rise to the top, but the vast inundation of slop to the general public may disappear. Imagine the fun of collaboratively designing whole worlds and stories with people, such as with tabletop role-playing, but far more immersive and not having to have a separate category of creators or waiting on companies to release products.

1: https://www.youtube.com/playlist?list=PLbB9v1PTH3Y86BSEhEQjv...