Really though, how would you extinguish Ubuntu? GPL?
It doesn't seem possible.
It doesn't seem possible.
You buy Ubuntu, put a lot of money into it, slowly force more and more of your MS software on people, make more and more third party software depend on it and eventually the effort needed to fork away and maintain "clean" version is simply too huge to be worth it.
But of course in this case there are many other Linux distributions out there already so it shouldn't be a huge cause for concern.