In a soon-approaching world where all movies have deep-fake actors, popular music is generated etc. how do you approach the economics of creativity and content generation?

Should Tom Cruise heirs receive a perpetual rent 200 years from now when Mission Impossible 57 staring their ancestor is airing?

What regulation should be put in place / would be effective in a world where any teen with the latest trending scoial media app on their phone can realistically impersonate a celebrity in real-time for likes?