Being told "no" by who? Google? It doesn't make sense that Google would allow Amazon to sell all their products except for things like Google Homes and Google N

Being told "no" by who? Google? It doesn't make sense that Google would allow Amazon to sell all their products except for things like Google Homes and Google Nest Cameras which Amazon has direct competing products (ie Amazon Alexa, Amazon Ring Doorbell). If people can buy Google Homes and sell them on eBay but not on Amazon then Amazon is not an open market because Amazon is restricting selling specific products that compete with their product line.