If this joint toolbar comes to fruition, which it never will, the crowd will decide the obvious winner for practically all queries. At that point what will be the difference between Bing and Google?
Speed of innovation. It's not our job to make it easy for them to have diffentiation. I just want great results. The more parity we give them with respect to data, the harder they'll have work to innovate in order to differentiate. AFAICT, that benefits us the users.
It would be great to see the discussion change.