Yes. I agree, and in a better society there would still be some room for advertising. If a product or service benefits consumers, then it benefits them to know that it exists. However, I would also say that we have several orders of magnitude more advertising than we need, and that the majority if it is zero-sum, or if you consider products like Pepsi and Coke (high margin addictive death syrup that would scarcely have a market if not advertised to the saturation point) decidedly negative-sum.