Audible hasn't even launched it's AI-powered book subtitles and publishers have already fired off a sueball
https://www.theregister.co.uk/2019/08/27/audible_subtitles_lawsuit/
Book publishers are suing audio book specialist Audible for using machine learning technology that automatically transcribes audiobooks to text, claiming that this violates copyright law.
The lawsuit [PDF} was filed by seven top US publishing companies, including Penguin Random House, HarperCollins Publishers, and Macmillan Publishing Group, at the District Court for the Southern District of New York.