I get the impression that almost every time a product-rating service becomes highly popular, it get coopted (or at least seriously compromised) by sellers. E.g.

I get the impression that almost every time a product-rating service becomes highly popular, it get coopted (or at least seriously compromised) by sellers. E.g., Amazon reviews, and This Old House (Bob Villa). The only exceptions I can think of are Consumer Reports, and probably large newspapers. But I cringe that even relatively trusted sources like Reddit, Home Depot customer reviews, and RTings are doomed to this fate. Is this simply as inevitable as death and taxes? Or is there some reason to hope for progress?