This is water under the bridge, but it's a bit ironic to me that I had to create an account to comment here. If OpenID 2.0 had succeeded, I would be commenting with my identifier https://self-issued.info/, which remains a valid, verifiable OpenID 2.0 identifier. You can still comment on my blog with OpenID 2.0 identifiers today. Have at it!

The OpenID Connect specifications are and always will be available for free. See where they are available for free at https://self-issued.info/?p=2573&cpage=1#comment-393548 .