This is complicated. Google tries to create (or emulate) something like community of individual engineers which rests on principles like "do no evil" or whatever. An order of some kind. It works. So, we could say that contributions are of individuals, not of Google. Even if contributors get paid for full-time, it is their own intention in the first place. At least it is what they want things to look like.

As for Apple, there are probably just programmers on a payroll. Apple has a different culture. It is a Steve's workshop, where they "invent" things, or whatever they think these days.