Given everything mentioned in your comment, I don't see how it implies that amazon can't cast a dragnet at some level you're not aware of.
How much brand damage and lost of business to AWS (their most profitable organization) would they lose if this were to leak? The more prevalent their use of this AWS customer data, the higher the chance it gets leaked.
Why do you think Amazon, one of the most logical and data driven companies, would make such a bad business decision?
That's actually the point. So what if they're using "anonymous" or other indirect data? If "Amazon.com" might be benefiting from AWS data of any kind then it needs to be investigated as potentially anti-competitive.