I think that’s already happening. You can buy a trained model of someone to do 24/7 live-streaming peddling products, or even black-mirror-esque bringing back deceased ones. Company in china selling this is Silicon Intelligence.

https://www.technologyreview.com/2023/09/19/1079832/chinese-...

https://www.technologyreview.com/2024/05/07/1092116/deepfake...