Audible (mentioned by OP) is a bit tricker though. I joined in 1999 so nine years before Amazon bought the company. It seems to run independently with its own CEO, not from within the Amazon stable.
I have an annual subscription for £109.99 which gives me 24 credits year so each book costs around £4.50 and I can keep it forever. I have a library of over a 1000 audio books. I do not have my account linked to Amazon.
To my knowledge, there is no comparable service.
While public libraries do supply a good range of audio books through apps such as Borrowbook, that has nowhere near the range of books, especially new releases, that Audible has, plus its licensing restrictions means there is often a long wait for a particular title.
Audible also has member offers through its Plus Catalogue - lots of free books and exclusive content.
Nowadays, the paper and audio versions of new books tend to be released simultaneously and, as I like to listen to new releases, especially nominees for book awards, Audible is an invaluable service.
However I feel about Amazon, which I do use from time to time but not excessively so (although it was invaluable during the pandemic) I would not give up my Audible membership.