Monetizing such a site would be difficult unless you happen to be already the world's biggest bookseller. Thus, any person/organisation with skills and talent to undertake such a task would be better off promoting something with wider margins.
Discounting this reason, and supposing it happened, then amazon could just turn up the dial and throw some resources at it. As things stand, they don't need to.
Discounting this reason, and supposing it happened, then amazon could just turn up the dial and throw some resources at it. As things stand, they don't need to.