If OpenAI loses, does this mean this voice actor cannot do their job any longer, because it happens some other actor has a similar voice?
Could Sky's voice actor sue a movie Johansson works in, because Johannson is copying her voice?
No. Just as if they hired a writer to do something that made them liable for copyright violation, or an engineer for something that made them liable for patent violation, those workers would not be banned from work.
The violation of right of personality isn't mere similarity of voice.