Not really. Nowadays a user base complete with data usage of the demographic you want to target is super precious. Think about it: Microsoft will know exactly

Not really. Nowadays a user base complete with data usage of the demographic you want to target is super precious. Think about it: Microsoft will know exactly who, when and from where people accessed your repositories. They will have detailed metrics on your commit/push patterns, the devices you use, etc... A social network of developers is probably something very precious. And whether MS's motives toward open source are hostile or benevolent, it is a precious thing to have. Even if they just want to kill it, that's probably the amount you need to spend on it.