it is no different from what we have right now. With big tech you will just have more opportunities to do something yourself rather than paying for "hollywood papa" or bend the knee to disney.
that's the wrong question, it is like asking "how many peasants are there nowadays"?
of course there are many more people that do not need to plow the fields all day to provide for their 11 children and that can entertain themselves with arts, that's not the point.
the point is that mass manufacturing easily reproducible standardized artifacts becomes industrial production, which has nothing to do with art.