We're on the threshold of two ways to make movies: real people or GC. Shortly after that, actors and production people will be scrounging for work.
We can do it but in America it won't fly for a little while. Most Americans like to relate to the persons acting or characters in a story line. Many people live vicariously through them, others feel better than them, or want to be like them.
Charley Sheen, Lindsey Lohan, Bill Cosby, Michael Jackson, Princess Diana, etc. drew in peoples attention. Which sold movies, books, TV shows, documentaries, drew people to live events etc. There are lots of good movies with good talent but nobody knows them so nobody watches them.
There is a lot of money made because of what happens off the screen and CG people characters don't get drunk and arrested or sing a duet with a handicapped child at a sports event.
I miss the old movies where you where you could watch the background people try to not blend in while blending in. Now large crowds are fake and so many other imperfections that added character are gone from cinema.