Advertising spurs continual product improvement. Advertising forces competition. Ads are necessary in today's marketplace, where price and quality are essentials in the marketing mix. The sales and distribution system is incomplete without advertising. Advertising and scientific research work hand in glove on a vast and amazingly productive scale.
Ads help the consumer profit from inventions by speeding up the diffusion of innovation process.
Candy manufactures had attacked the tobacco industry, which fought back. That's because the head of American Tobacco was, well, a tyrant. This is one version of the story of one the most ingenious advertising campaigns ever. Green ink was copper based and the story goes that in a year they saved enough copper to make 400 light tanks. That part of the story is true.