I'm more interested why this isn't something that Amazon didn't decide to police. They know when someone purchases something from their store, they can limit re

I'm more interested why this isn't something that Amazon didn't decide to police. They know when someone purchases something from their store, they can limit reviews to those people who have many confirmed purchases from them and perhaps have some kind of human validation to them (showing ID?). Just spitballing here, but it seems like a solvable issue.