Snapping up competitors and potential competitors, on the other hand, as Google is doing, and using your might to unfairly boost them, is pretty old-school anticompetitive behavior. Here’s how Pearlstein puts it:

The question now is how much bigger and more dominant we want this innovative and ambitious company to become. Google has already achieved a near-monopoly in Web search and search advertising, and has cleverly used that monopoly and the profits it generates to achieve dominant positions in adjacent or complementary markets. Success in those other markets, in turn, further strengthens Google’s Web search dominance and reduces the chance that any other competitor will be able to successfully challenge it.

Nicely done.

Ryan Chittum is a former Wall Street Journal reporter, and deputy editor of The Audit, CJR's business section. If you see notable business journalism, give him a heads-up at rc2538@columbia.edu.