Microsoft closing down CodePlex, tells devs to move to GitHub

Git is immensely portable at least... I mean all you need is a remote SSH and you can push to that for remote/upstream. Now that doesn't include issue tracking or work items, etc.. but then again, pretty much all the options on that side are locked in. Compared to migrating a TFS repo, for example, it's night and day.

Github, Gitlab, Bitbucket, Gogs, cgit, stagit, AWS codecommit, Stash, Google Cloud Source Repositories, Beanstalk, Codebase, planio, Cloudforge..

Some of these aren't comparable but there are hundreds of ways to host code in 2017. GitHub's network effect is definitely a thing however people are only a git push away from moving somewhere else.