I think MS was far more aggressive (some would say, predatory) in maintaining their market domination when the PC was the hot platform of the day ('80s to mid '00s), than Google is now.
DOS/Windows (and Office, another brutally fought-for market dominant) was the lifeblood of MS, Google mostly just wants to make sure a lot of people have cheap, always-on, access to the web so they can monetize their searches.
DOS/Windows (and Office, another brutally fought-for market dominant) was the lifeblood of MS, Google mostly just wants to make sure a lot of people have cheap, always-on, access to the web so they can monetize their searches.