Forget Amazon, ultimately this is going to dramatically alter consumer choice on a manufacturer level and OEMs won't be able to optimise their way around it.
Users might not even notice - Will they prompt around it e.g., "Didn't Dyson used to make a hair dryer that was well reviewed?" if it isn't even recommended to them?
Users might not even notice - Will they prompt around it e.g., "Didn't Dyson used to make a hair dryer that was well reviewed?" if it isn't even recommended to them?