If you were a purveyor of fake reviews, you would want to track the reviews you peddled. It's knowable if reviews disappear over time. What would be the incent

If you were a purveyor of fake reviews, you would want to track the reviews you peddled. It's knowable if reviews disappear over time. What would be the incentive to come clean to Amazon about your own fake reviews? I don't think the people who sell fake reviews are likely to grow a conscience spontaneously.