Earlier quoted context omitted.
My guess is that such "digital narration" is on the brink of becoming available as a service to authors and publishers, with Amazon and Apple trying to get ahead of it by selling a product that can only be published on their platforms then. They are surely able to undercut human narration, but even on digital narration they have an unfair advantage of earning a share on every sale as well. Will be interesting to see…
I'm curious what the economics are here, because getting someone to just read a book can't possibly be that expensive, right? I'm not talking celebrity voice-over work, but just getting anybody with a passable voice to sit down a spend a day or so reading a book into a microphone? Does that really cost that much more than having someone sit down a listen to the whole AI-generated audio book to do QA? And then there's…
If we're not talking about a trained voice actor, you may want to look at some thing like LibriVox, which is entirely volunteer run on public domain works, and while the efforts are appreciated, the quality is noticeably different.