XaaS has many benefits, but uptime is not one of them anymore. I self-host my repos, had a few downtimes but thanks to this DDoS my local services have better uptime. ( Disclaimer: I know it's not apple to apple comparison as scale is massively different)
distributed source code management theoretically doing this in a robust and replicated manner quite a bit easier. if you ignore partitions, it seems pretty straightforward to make a git push-all, and a recovery process for stale nodes coming back.
