Sure, but that's the same with every other reseller: if you want more control over how they sell your things, you need to make a deal with them about it. Just because a seller is larger than others it's not suddenly a monopoly abuse if they legally resell your product. Saying "I don't want you to resell my stuff" is generally speaking not a right you have as a manufacturer (you might have leverage to stop misleading advertisement or misrepresentation of the product though).