I assume the end goal of this is rendering photo-realistic movies of humans without filming actors. Neural voice generation is also quite good at this point. Quite interesting where this could lead to.
It's a double whammy in that they can make more product simultaniously and they get full lifetime control over presentation.
It's easy to contract someone to keep their mouth shut and behave in a certain way for a few years but over 50-60 years it's much harder.
i.e. The presence of someone with strong political opinions like Harison Ford in Star Wars affecting long term sales in certain markets.
If you're an executive more interested in money than politics it must be very tempting.
Even having CGI replacement as a threat to keep actors in line is probably useful.
God that's despressing. :(