> but is their .md file renderer open? This part seems mostly interoperable. GitHub's alternatives seem to have implemented something mostly compatible. If you

> but is their .md file renderer open? This part seems mostly interoperable. GitHub's alternatives seem to have implemented something mostly compatible. If you migrate from github to gitlab or gogs or gitea or forgejo, that part will probably just work. Worst case, markdown is still mostly readable as is and a commit can fix the odd non working thing. But 100% agree with the rest of your comment. GitHub has managed to create a network effect by trying to be a social network and succeeding. They managed to create fomo for code hosting. This very HN post shows this.