But MS had exactly the weakness I was talking about. If someone gives away their OS for free what will you do? Giving away advertising for free wont affect anything.
If you can't know what the actual value of the service is, how can you make decisions about who is cheaper? Is bing cheaper? Maybe, but what about after you consider the vastly decreased exposure? How much does that matter?
I still think the only way to beat google today is to make a better search engine. Tomorrow that wont work either.