There is no way companies are going to deal with the personalities, quirks, and cost that comes with Hollywood actors. Perhaps some of the biggest names will survive but that is about it.

I can also see some of those big names having to lease rights to allow software to use their voice, rather than paying them to show up for live reads. So, for example, Disney owns the rights to Dwayne Johnson's voice and can, not only stick whatever the Rock is cooking on anything for the next 5 years, they can dictate what the Rock cooks. By the time the next generation is old enough to have celebrities to follow, they'll all be A.I. generated. We'll probably also start seeing entertainers falling away while serious artist return to theater, if there's any demand for live performance left in a time when people can order up a customized experience for a fraction of the cost.