Nope, you are missing the whole picture :-) You're stopping your reasoning at the numbers: some contributions from Google, none from Sony. (At this step you'r

Nope, you are missing the whole picture :-) You're stopping your reasoning at the numbers: some contributions from Google, none from Sony. (At this step you're also ignoring contributions to FreeBSD from companies that do contribute back, but whatever.) The big picture would be understanding why GPL wouldn't affect that situation.