While I like the sentiment, and have seen my trust of Amazon and reviews at Amazon plummet in recent years, I suspect this will just push the practice underground. Unscrupulous vendors will continue to utilize their network of "reviewers", but will no longer instruct them to include a disclaimer about the reviewers being given free products in exchange for (almost always positive) reviews.
With the effect that it will just screw amazon further. Because of this problem I've started buying products directly from the brand stores or walmart/costco/target.
I completely stopped buying from ebay years ago because of similar problems.
I guess curation (of products, content, reviews, vendors, everything) remains one of the big problems of the internet age, where there's a million of everything and it's hard to know who to trust.
