That has only really bore fruit in the US though. MS have less than 5 percent share of search worldwide.
"Google bought their way into search by paying firefox"
Google actually had a larger share of the search market prior to the Firefox deal.
Google already owned search when firefox finally had nontrivial market share. They did not "buy their way into search", the transformed the market with an excellent product (Google altavista, the undisputed king until Google came).
At some point, they started paying e.g. mozilla to maintain their position.
But they reached that position based on merit. (A rather uncommon event, unfortunately).
http://cnnmoneytech.tumblr.com/post/10483503055/eric-schmidt...
*recoiledsnake originally had the word "lying" in his comment. I just noticed he edited that out.
From a results-based perspective, it more-or-less is. But actually capturing the market is hard to imagine. Search engines in general seem to be reaching the limits of filtering 5 billion pages based on 2 or 3 word queries.
"There was some suggestion that Mr Gates may be anxious to keep Apple afloat to forestall a scenario where, following an Apple demise, a virtual monopoly hold by Microsoft on the software market would inevitably attract negative attention from fair competition regulators in Washington."
http://www.independent.co.uk/news/business/apple-grabs-150m-...