I wouldn't exclude the possibility that this is being done deliberately and not merely as an outcome of the problem you described. Maybe they have the data to

I wouldn't exclude the possibility that this is being done deliberately and not merely as an outcome of the problem you described. Maybe they have the data to support the decision to allow a measured amount of fake reviews in. If well-reviewed products sell better than under-reviewed products, and the number of under-reviewed products keeps growing month after month, slowing sales growth, Amazon might see more $$$ down the road if they do allow a few blemishes into their reviews on under-reviewed products.