> Amazon is stuck battling all kinds of fraud and it can be hard to differentiate
They have every byte of data ever gathered from all their platforms: IP addresses, network scans from Echo, information from caching servers at ISPs, device fingerprints, site/API access patterns, typing cadences, mouse dwell fingerprinting, timing analysis of orders vs reviews, customer data access patterns vs customer reviews, description text and image analysis, product change timelines, buyer and reviewer clustering, banking details, registration and tax documents, all of it and more. They are one of the biggest data processing technology companies in the world (various flavours of "AI" and otherwise). They even have regulatory carve-outs for using PII for fraud prevention.
I am completely sure you could shine a great big data science floodlamp at all that data and have a vast number of scammers stand out in stark relief. It does feel a bit like the scammers are being tolerated to the extent that they don't drive customers away (and I am very sure the data for that is carefully monitored) or attract regulatory attention they can't lobby away.
Then again, who would win, one of the world's biggest AI company or the word "without": https://www.amazon.com/s?k=shirt+without+stripes