Happened to me when I saw a book on the US site, I wasn’t able to see all reviews, but there was a button to sort-of “apply” to get approved for seeing all of them.
It took five days, then I got this email.
Interestingly, they’re not doing this on the European site, you can still see all reviews there.
Huh til, it still is the source of his wealth, and the other 91% probably also goes mostly to rich assholes, however I’m sure the public will be holding the bag if Amazon ever goes down in valuation.
https://www.investopedia.com/articles/insights/052816/top-4-amazon-shareholders-amzn.asp