I don't think that's true. SOTA open source is still much worse than eleven labs and requires a dedicated modern GPU for any kind of speed of generation. Certainly can't on-demand, on-device on an iPhone.
Apple already is doing very high quality generated audiobooks, but you do it for your book as the author.
Apple already is doing very high quality generated audiobooks, but you do it for your book as the author.
https://authors.apple.com/support/4519-digital-narration-aud...
"Mitchell" sounds exactly like a very popular narrator "Ray Porter".