If they did, it'd be still complicated. A real example, a modder makes some content for an old abandoned game. He needs some voice over, so he contacts the original voice actors, but they deny to do that job on the grounds of being a member of org like this[1] which strictly prohibits to take side jobs.
And to make it even more complicated, consider tools like for making deep fakes; if somebody makes a neural network that emulates the original voice, should it be sub-licensed or copyrighted? Can a voice be copyrighted?
If they did, it'd be still complicated. A real example, a modder makes some content for an old abandoned game. He needs some voice over, so he contacts the original voice actors, but they deny to do that job on the grounds of being a member of org like this[1] which strictly prohibits to take side jobs.
And to make it even more complicated, consider tools like for making deep fakes; if somebody makes a neural network that emulates the original voice, should it be sub-licensed or copyrighted? Can a voice be copyrighted?
[1] https://en.wikipedia.org/wiki/SAG-AFTRA