I'm with audible on this. I find supremely annoying the copyright owners who insist that any new use of their IP should be a brand new source of revenue.
And if users were to play an audiobook in front of a speech-to-text machine, they'd probably sue the users, claiming they only bought the license to listen, and not to read. And not in that country. And not on a balcony where passersby could catch a glimpse. Etc. Etc.