Microsoft reaffirms stance against web ads: "The web should be clean and free of these obtrusive, virus laden, obnoxious commercials"
All I'm trying to say is that's easy to attack something that is not part of your own business model. Google doesn't sell software for a living. Of course they don't care about software patents. Even more so, they profit the most if everything is "free". Well not really free, but paid through ads.