The smoking gun as it relates the API copyright issue came in a March 24, 2006 email in which Rubin said he didn’t see how Google could open Java without Sun since Sun’s owns the intellectual property and the brand.
Maybe Google just retroactively open sourced code they didn’t actually have the right to? Makes total sense. “Open” knows no bounds!
Maybe someone should copy Google’s search algorithms and open source them. Google probably has some IP there, but, you know, whatevs.