Part of the appeal of a bookstore is to have a different shopping experience than what you get online or even at other physical stores. It's walking over to a section, picking up a book, seeing what resonates. It's 'browsing' in a slower, calmer form, closer to the reading experience itself.
Why doesn't Amazon try to make that? Replicate that experience in a new brand, call it 'booklovers.com' or something. Make it a cut down subset of features and information, with the book's content more at the center of the experience and easier to browse, along with the books 'next to' it. More curated, less metadata.
Being freed of physical world means we can have many very different experiences without dealing with the scarcity of real estate. Yet Amazon tries to standardize the shopping experience, to the detriment of many categories of products that deserve their own approach.