Well, try doing that for music or movies or proprietary leaked codebase.
If you think copilot is uniquely producing things that are not that different from humans then surely no one would have any problem with feeding it massive amounts of corporate programs?
I am not aware what writers are doing but there have been plenty of uproar regarding stable diffusion. I have a feeling that if any tools like this get built for musicians/film-makers, it will look vastly different from the current situation.