First of, as mentioned in the comments: There are a lot of audiobooks already available on Spotify.
More and more will get added every day.
Regarding this idea topic here: it has been submitted a while ago but unfortunately hasn't gathered enough kudos (50 per year) to stay active in the ideas exchange. In order to keep an overview of the active & recent ideas in this forum, we will close this idea for now. However this does not mean that your idea has been declined by Spotify.
If you still feel strongly about your request, we encourage you to post your idea in a little different form again! Maybe now is the right time to receive the support of our community for your suggestion! ;)
Do you have any further questions on how the idea exchange is managed? Just click here!