OpenAI is going to do a very good job of pretending that it stealing literally everything on the internet and re-selling it is some unique new activity that's not happened before. That's their core business. What they're not going to be able to do is pretend that hiring a soundalike and then making repeated references to the original voice is ok. This isn't new legal ground no matter how much money you throw at it. Otherwise every advert on TV would have some no-name actor doing impressions of well known actors. They will have to pay ScarJo a lot of money, and probably they'll have to stop using the voice too - because they've pissed her off so much at this point.
