The antitrust lawsuit against IBM was dropped, and that against Microsoft result in the imposition of only minor legal remedies. So some may conclude that IBM and Microsoft bore little ill effects from the suits. But such suits can reduce morale, result in loss of talent, and restrain the efficiency, innovativeness and competitiveness of the prosecuted companies.
In the case of IBM, Lou Gerstner has made some strong, and plausible, comments on the deleterious effects of U.S. antitrust action:
(p. 118) The other critical factor—one that is sometimes overlooked—is the impact of the antitrust suit filed against IBM by the United States Department of Justice on January 31, 1969, the final day of the Lyndon B. Johnson administration. The suit was ultimately dropped and classified "without merit" during Ronald Reagan’s presidency, but for thirteen years IBM lived under the specter of a federally mandated breakup. One has to imagine that years of that form of scrutiny changes business behavior in very real ways.
Just consider the effect on vocabulary—an important element of any culture, including corporate culture. While IBM was subject to the suit, terms like "market," "marketplace," "market share," "competitor," "competition," "dominate," "lead," "win," and "beat" were systematically excised from written materials and banned at internal meetings." Imagine the dampening effect on a workforce that can’t even talk about selecting a market or taking share from a competitor. After a while, it goes beyond what is said to what is thought.
The reference to the book, is:
Gerstner, Louis V., Jr. Who Says Elephants Can’t Dance? Leading a Great Enterprise through Dramatic Change. New York: HarperCollins, 2002.