[tikiman163]

When was the last time you saw an advertisement for Google search.

I'm serious, they advertise for other people, but nobody advertises for you to use Google.

Who exactly is Google paying for preferential treatment regarding search? Microsoft's default browser uses Bing, Apple's uses Yahoo. Android? Android is made by Google, and most phone manufacturers still swap out the default browser for something using Yahoo.

Google spends virtually no money on user acquisition. Everybody uses them because they have a track record of being trust worthy with email and providing the best search results and tools like maps and even free tools for finding the best flights all for free.

Also, an anti-trust lawsuit would require that they charge their users. Having 90% of a market that doesn't charge its users doesn't make them an oligopoly, it makes them a non-profit.