Thank you for bringing this to our attention. It was something I was not aware of.
The big tech companies are starting to get themselves in hot water because of their influence over mass numbers of people and the "monopolistic" mindset they have.
When reading this, I thought this was ideal for the blockchain. If the rating is out there for all to see, nobody can change it. Amazon, of course, would not want to implement this since they would not be able to play their games.
It is all a process. Big tech is eliminating the traditional business which, in my opinion, is a good thing. Now, big tech is so powerful (and devious) that we need to take the next evolutionary step in the process, which a part is blockchain.
Thanks again.