A few years ago, a leading ketchup maker significantly increased its advertising and promotion expenditures and simultaneously lowered its prices. The company gained market share at the expense of the top ketchup manufacturer, Heinz, and other brands, but the victory was a hollow one. The combination of increased advertising expenditures and low prices caused its profits to suffer, and the company eventually abandoned this strategy.

A version of this article appeared in the November 1979 issue of Harvard Business Review.