True, qualified by assuming some causation could be eventually proven. There are already plenty of studies showing the effects of exposure to advertising on behavior, attitudes, and cognition.
All individuals and corporations are responsible for the their behavior. Mass communications should be especially conscious of the impact their actions have. However, the resulting macro-psychological effect of mass messaging is not entirely predictable. So the best we can do is to do the best that we can to act and communicate responsibly.
