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"The court concludes that Microsoft maintained its monopoly power by anticompetitive means and attempted to monopolize the Web browser market,"

Ten years ago, on September 26, 2000, that trial took a crucial turn towards the settlement that would allow Microsoft to retain its vast control over the personal computer operating system market. Let's revisit the essentials of that case, and follow the aftermath—a legacy of endless negotiation and struggle with the entity that, to this day, is the OS on 91.32 percent of the world's PCs.

Microsoft illegally maintained its monopoly over Intel-compatible personal computer ("PC") operating systems by acting to undermine the distribution and commercial appeal of alternative computing platforms like Netscape Corporation's Navigator browser and Sun Microsystems, Inc.'s JavaTM technology.1 By eliminating the ability of alternative platforms to compete with Windows, Microsoft has not only maintained its monopoly over PC operating systems, it also has dramatically increased the economic power that it derives from that monopoly, such that Microsoft now has the power to control competition in a number of adjacent and downstream markets as well.