Timely snapshot from The Economist. The article appears to contain some surprising errors, however, e.g., asserting that Vista was written from scratch. That might have been the original plan, circa 2000, but the restart in 2004 began with Windows Server code.
Computing has changed radically since Microsoft rose to prominence 25 years ago with its operating system for IBM's personal computer. Microsoft unified standards, which made life easier for users and software writers. Both Windows and Office were employed by software developers as platforms for their own applications, nudging Microsoft further towards ubiquity. Now three trends are changing this.