It is very likely that many firms spend more on advertising than, for their own best interests, they should.
Michael SchudsonAdvertising is much less powerful than advertisers and critics of advertising claim, and advertising agencies are stabbing in the dark much more than they are practicing precision microsurgery on the public consciousness.
Michael SchudsonDifferent groups are differentially vulnerable to advertising; and their vulnerability varies not so much with the character or quantity of advertisements as with the informational resources they can claim by age, education, station in life, and government guarantees of consumer protection.
Michael Schudson