If advertising is giving an expected edge over competition bigger than price decrease, then the advertising will be used in sort of an arms race that could have been a competition in giving the best product for the least money instead.

Still, even if there is no immediate price decrease for the customer, I would be much more satisfied if all the money went to the maker(s) of the product and well-investing shareholders than someone who provides no value and could have been working on something productive instead.