Comment by Yetanfou

Well, the difference is the users had and have the choice which kingdom, if any, to inhabit or build. If Github goes the way of Microsoft something of value will be lost, namely the relatively open - as far as any centralised resource can be open - culture of a non-affiliated source repository. The actual functionality which Github offers is by no means unique and can be achieved in many different ways.

To be honest I don't think Github, or any other centralised resource, is the way to go. Now that Github may fall on the list of locations to host your projects it is worth thinking about alternatives to this centralised system. Self-hosted gogs, gitea or gitlab is probably the easiest option right now, I've had a gogs/gitea instance running for a few years which mirrors my activities at Github and can be used as a substitute at short notice. These mirrors are not complete though, I currently do not mirror the issue tracker nor the wiki. I guess I better start doing this as well to really have a turn-key Github alternative for when the time comes for us to part ways.