Are they in the business of providing free search? Not much of a business model there...Maybe. Do you have a source for that claim?
No, your statement that I originally responded to was that "Every point android grows ios get less and less important for google." I was simply pointing out that much of those points of growth for Android did not necessarily benefit Google at all.
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Google would easily qualify as a monopoly under antitrust law in the search business. They have maintained 65-70% share for years. That would certainly be considered "significant and durable market power."
http://www.ftc.gov/tips-advice/comp...ws/single-firm-conduct/monopolization-defined
Nothing wrong with that, of course.
Or
Are they in the business of selling advertising space on websites, and just happen host a search engine that can conveniently host x% of those ads.
How big a slice of the advertising market do they hold?