That was my reaction as well. If an external independent researcher can do this, Amazon, Google, and other big platforms surely have enough resources, smarts, a

That was my reaction as well. If an external independent researcher can do this, Amazon, Google, and other big platforms surely have enough resources, smarts, and full access to all the data to identify and eliminate bogus accounts, shill reviews, and scammy or counterfeit products. Yet they don't do it.