I work with a bunch of brands and the marketplace itself is a huge problem. Stolen goods, return fraud, Amazon directly competing after finding a profitable bra

I work with a bunch of brands and the marketplace itself is a huge problem. Stolen goods, return fraud, Amazon directly competing after finding a profitable brand/product, chinese knockoffs/junk, mixed inventory, ads, many more. The tools amazon provides to combat these are largely useless. Diving into one I think is detrimental to both sellers and customers, Ads. If you are not a huge brand this is a ~mandatory additional cost on top of FBA (or you won't show in results). As a customer it sucks because many of the top results are trash. Why bother having a decent product if you can just buy a ranking and some fake reviews? Amazon is pushing this so hard right now as it is a quickly growing revenue stream for them :(