This is a really weak comparison. Peer-reviews are used as a gating mechanism for papers unlike products on Amazon. Reviewers on Amazon don't have a say on what

This is a really weak comparison. Peer-reviews are used as a gating mechanism for papers unlike products on Amazon. Reviewers on Amazon don't have a say on what gets on the list and what gets off. Additionally, published papers are often cited by other papers and peer-reviews are necessary to prevent a false premise from being propagated through citations unlike products on Amazon.