I tried Persona, great concept, the adoption rate was differently very slow. I don't know if they ever reached out to large players and encourage them to adopt,

I tried Persona, great concept, the adoption rate was differently very slow. I don't know if they ever reached out to large players and encourage them to adopt, but I think believe even if GitHub did, that wouldn't matter much. Mozilla did not want to keep running Persona as the sole IdP in the Persona platform, it did only to encourage development and early adoption. Even internally I don't think all sites went to Persona, but the large one differently did though. With that attitude I was fearing a major migration which could kill motivation.