The worst part the description of what OpenID is design for is too much promising. Those who retire OpenID never going to give another chance. Everybody will be waiting for new alternative but that's kind of everything from the beginning.

The story of OpenID (not)success sounds like the html compatibility issue. Overall, time pass by and it starts shaping up. But probably no lessons learned from it (yet).

And when the big players are giving up on it no way small startups will be able to maintain, improve and support OpenID features.