OK, done.
Now you have Amazon Basics' products competing with Amazon Fulfillment's products on Amazon Dotcom's website. Different entities, not even under the same corporate governance.
If they are different entities, how come Amazon Basics can use the same name as the platform? Did Amazon sell the rights to another company to use their brand?
"Did Amazon sell the rights to another company to use their brand?" But of course, why not? These kinds of trademark licensing agreements are all over the place, there would be no difference here.
