It's not just network effects that saved GitHub. It's also that Microsoft didn't handle it like an insecure bully and visibly continued a commitment to its comm

It's not just network effects that saved GitHub. It's also that Microsoft didn't handle it like an insecure bully and visibly continued a commitment to its community. Had they not done that, certainly alternatives would've had a better go of picking up disillusioned GitHub users. Twitter instituting a policy against cross promotion isn't going to save the public square. It's encouraging the rest of the ecosystem to retaliate or to escape.