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How is Google's search share nearing 100% any different from Microsoft's OS share nearing 100%? Microsoft could have quite easily done whatever it wanted with the flow of information during the mid-late 90's, with a huge market share and very little competition.

The government won't just 'take control' of a public company; it may attempt to break it up, perhaps, but the Internet is, as of now, about as much of a free market as exists anywhere. If Google has near 100% market share, perhaps it deserves it?