they Don't actually claim ownership. Audible has another product "Immersion reading" where you can buy both the Audio version and written version of a book and

they Don't actually claim ownership. Audible has another product "Immersion reading" where you can buy both the Audio version and written version of a book and audible will sync between the two highlighting the spoken words on the written version in real time.The user can go forward/backward in the written version and have audio synced to that. Again this works with a licensed copy of both audio and text of the book. Whereas closed captioning is completely different. It is driven completely by the audio, does not have the accuracy of the real text, is being displayed line by line and in a time you don't control. noone would consider that equivalent to having the complete text book. And the intention to me is clear. Audible is already licensing Text versions for the customers who want them while having CC is a hearing aid just for the audio version.