- SourceForge had become questionable with its inclusion of its own malware in installers https://arstechnica.com/information-technology/2016/06/under...
- Google Code was untrusted, because they have a tendency to rug pull their products now and then
Github served a market need.
For others
- Bazaar was too Ubuntu specific (was in-house Ubuntu project originally)
- Bitbucket kind of survived as Atlassian
- SourceForge had become questionable with its inclusion of its own malware in installers https://arstechnica.com/information-technology/2016/06/under...
- Google Code was untrusted, because they have a tendency to rug pull their products now and then
Github served a market need.
For others
- Bazaar was too Ubuntu specific (was in-house Ubuntu project originally)
- Bitbucket kind of survived as Atlassian