Imagine a scenario where Microsoft's moves into open source aren't genuine. They spend a decade or two working their way into the ecosystem using their ownership of GitHub to encourage Microsoft solutions. One day Google wakes up to find some key component has been replaced with something Microsoft controls, or at least primarily develops. No biggie. They'll just make their own. Until the next one.

I'm hopeful EEE[1] is a thing of the past, but I can see why Google would hedge for the possibility of Linux and open source in general being pod peopled into an ecosystem it can't keep using. They're worried Microsoft will do to Linux what Google did to AOSP. Golang's dependence on importing stuff from GitHub is already a threat.

[1] https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguis...