Maybe, but maybe not. The only thing that has stopped us from having all our jobs replaced 50 years ago by some machine is that humans work for cheap, often cheaper than it would cost to service that would be burger flipping machine. It might still be cheaper in the future to hire an actor than to hire a technician who can produce an equivalent deep fake along with the costs of providing these hardware resources. It was one thing when we were crafting entire worlds out of practical effects vs CGI, but this is literally CGI on one individual. Even today, CGI isn't always cheaper than practical effects, and sometimes big shoots still use practical effects.

$$ casts is no big deal. It also saves you cost of location and probably 100 other people involved in movies.

Next level of blue screen. I would suspect stars of the future will be similar to "manufactured" and business formed bands of the past.

Sign up a youngster for a small fee. Scan the shit out of his body, voice etc.

Free actor for life.

Kid gets $500 lifetime payment.

Why sign a kid, when a 3d artist, a psychologist, and a writer, working in tandem with an economist and a publicist will get you much better results?

If you sign the kid, you still need the artist, the psychologist, the writer, the economist and the publicist in any case. Why would they not simply go all the way and cut out any potential name and likeness disputes?

OK, if the kid is an athlete, fine, I get that. EA has to do that now. But if I just want to create a bubble gum pop idol. my incentive is to be greedy and not share with anyone if possible.

AI technologies, with a little help from specialists like psychologists ensuring the product is addictive, make it possible for me to be greedy. It's happening in porn now, and if it's happening in porn, it'll happen everywhere else soon enough.

Because people don't like fake people posing as real people. This may change but manufacturing a "real" person currently goes over like a lead ballon.

You don't need AI technology to make a successful cartoon.

Not just blue screen but these new AI actors would do things that no real human being could do. One reason why Game of thrones had only 8 seasons is because crew got bored and kids grew up.

With deepfakes you can have peter pan like actors who will not age or even reverse age. everyone will have 8 pack abs and 36D busts (or whatever audience likes). In fact there could be A/B testing of how actors should look and behave.

Next obvious step is people like me volunteering to be that "extra" behind the key actor and engage in a bidding war. All I have to do is give my body scan and one of the zombies killed by Rick in walking dead could be me.

Bulbs did not replace candles, they created possibilities that candles could not.