And you are mistaken about the GPL code. It is individually owned. Linus Torvalds could at any time remove his contributions from the Linux source tree, move the code to the BSD license and build a new Linux kernel under the BSD license. You retain the copyright to your code, but you agree to let others use it under the GPL. You are free to take your own code and dual license it. That's what TrollTech does with QT. They could legally take out outside contributions to the GPL code and still make releases that are proprietary under another license.
I don't think so. But I'll humor you for the moment... Show me the part in the GPL that allows Linus to remove his contributions from the kernel. And while you're at it, explain to everyone what they're supposed to do with their RedHat CD's that contains Linus' kernel source... Mail it back to Linus?