You're getting the two mixed up. The concern with Microsoft wasn't that they used their OS monopoly to unfairly compete with other operating systems, it was th

You're getting the two mixed up. The concern with Microsoft wasn't that they used their OS monopoly to unfairly compete with other operating systems, it was that they used their OS monopoly to unfairly compete with other applications (eg. IE vs. Netscape). The concern with Google isn't that they might be using their search near-monopoly to unfairly compete with other search engines, it is that they might be using their search near-monopoly to unfairly compete with other websites (eg. Knol vs. Wikipedia).