"I don't know what a monopoly is until somebody tells me." — Steve Balmer, former Microsoft CEO
The U.S. economy is dominated by three companies — Amazon, Google and Facebook, all founded in the past 25 years. Each of these platforms has changed our lives, to the point that it is difficult to imagine life without them.
All of these companies are increasingly being challenged as too powerful. Each has an overwhelming U.S. market share of their industry: Google with 75 percent of web searches, Google and Facebook combined for 73 percent of online advertising, and Amazon with 44 percent of online shopping.
The Sherman Act of 1890 outlawed monopolistic behaviors. Having a majority market share does not in itself violate antitrust law. Rather, it raises the sensitivity with which competitive behavior is judged. Once a firm controls more than half its market, it has the ability to crush smaller competitors. Metaphorically, a sharp elbow by a skinny teenage athlete is less dangerous than by a muscled giant. One bruises; the other might shatter your skull.
A small or medium-size firm can attempt to impose exclusive bundling agreements on its customers and partners. But it is only with a majority market share that competitors and partners can be bullied, because they have limited alternatives.
Some companies pretend ignorance of the law. Two decades ago, Microsoft spent several years acting as if there were no such thing as antitrust law, blundering about like a bull in a china shop before being stopped by the Justice Department in 1998. In contrast, other tech giants like IBM and Intel were more subtle and aware of their status as industry behemoths and generally avoided seriously attention from government regulators.
What sort of market behavior has raised this issue to its current high profile?
1. Amazon continues to aggressively pursue new online industries, in groceries (Whole Foods), prescriptions and even event ticketing. Whole Foods was barely making money as a public company. Given the much-publicized reduction in prices at Whole Foods after Amazon's acquisition, it is very likely Amazon is subsidizing Whole Foods' business to gain market share, a violation of antitrust law.