How far does that line of reasoning go? Suppose that every car they sold used the same key. "We just said that the car has locks. We didn't say that those locks have unique keys."
Clearly there has to be some degree to which a customer can assume that a product they buy meets the standard functionality associated with that product.
Clearly there has to be some degree to which a customer can assume that a product they buy meets the standard functionality associated with that product.