No they can't, but the manufacturers invariably find ways around it.
If a supply chain comprises manufacturer - main distributors - retailers - customers, then the manufacturer can seek to make sure that the retailer is properly trained to advise the customer. This happens with upper-end electrical products (hi-fi's etc.) where the manufacturer doesn't want to find a cheapo retailer undercutting severely the other retailers.
Tescos were buying through the 'grey' market - legal products sold into another country intended for sale in that country at a differential pricing policy, which Tescos were legally importing into the UK, paying the required duty (if any) then still selling more cheaply and making a profit. Levis somehow demonstrated that Tescos didn't have the right to do this.