How are there not laws that enforce companies to verify there reviews. I understand it is a complex problem, but first it was our elections were manipulated via spam advertising and now, most of the products that we buy are going to be.
Well such moderation requirements would be massively impractical and run afoul of safe harbor. Not to mention being defacto prior restraint. Besides even if money was no object it isn't possible to always and definitively prove truth or falsehood. Even if someone posts a five star review of chalky dry chocolate they may just have crappy taste.