They can have weekly outages, and the FOSS products would still be forced to be on GitHub.
https://github.com/EvanLi/Github-Ranking/blob/master/Top100/...
proof here. The top are taken by chinese educational repos. Elastic Search and Spring Boot are the only projects actually used by anyone in the top 10. But why would I trust the stars for spring boot over the fact its used in every java shop on the planet?
- number of contributors
- open issues
- merged and unmerged PRs
- commit history
- the code
- project governance
Some of these are also tied into GitHub rather than the git repo itself