Did they want a fast Linux or their "own" Linux? They are trying to get us to program systems now in the Go language, web apps in their DART language. They control search, increasingly smart phones too, what's left? Own your OS and hardware.
> They are trying to get us to program systems now in the Go language
Basically everything on http://golang.org/ is licensed under either a CC Attrribution 3.0 license or a BSD license. Go was intentionally designed to be a specification and not just a single canonical implementation. True to that, there are two mainstream Go compilers, one of which (gcc-go) is licensed under the GPL v3.
Aside from the fact that Google happens to employ some of the main developers of the language, I don't see how you can say that they 'own' it, since they've gone out of their way to make none of it proprietary.
Linux is just fine Google, stick with it.