No, those were already open source before Google got involved, so Google didn’t really have a choice.
No, those were already open source before Google got involved, so Google didn’t really have a choice.
- Webkit is LGPL/BSD, so it can be linked to proprietary code without forcing its redistribution.
- The Linux kernel is GPL, but the license has never applied to userspace code, and everything "above" is either written by Google or non-copyleft open source code.
I think it's only reasonably for Google to contribute some after getting so much from open source projects, but that doesn't mean they didn't have the legal choice to do otherwise.
Apple didn’t build a proprietary OS on top of BSD licensed UNIX. They used the core of NEXTSTEP, which in turn used parts of several different BSD distros (though not its kernel or driver system).