The world has changed a lot since the 90s. Microsoft is a pretty developer-centric company now. People should just chill out and see what happens.
Surely people have local copies of their source code, right? I mean, you basically have to. That's how git works. So the worst case scenario is that Microsoft does something to piss people off and then they switch to another provider. That makes the worst case scenario exactly the same as what people are advocating doing now voluntarily. How, then, is it not more prudent to wait and see what happens?