OpenID hasn't died at all - it's just used in a different context. We implement this now for SSO in corporates to unify fragmented IAM scenarios. Accepting any

OpenID hasn't died at all - it's just used in a different context. We implement this now for SSO in corporates to unify fragmented IAM scenarios. Accepting any domain as an OpenID IdP is not likely to be a feature of publicly facing sites, as they still provide the ability to create / register / use these accounts for spam and other unwanted abusive purposes.