Indeed, but I do wonder whether most users need a single global identity anyway. FIDO keys or—gasp—passwords-per-site seem to solve the real problem most users have (which is, you know, maintaining logins).

I do think if there were strong user demand for a unified web identity (beyond email identifiers, which aren’t obviously improved by blockchain), we’d see more adoption of OIDC, including offered by IdPs who only provide that service.

Instead, the common providers are providing federated identity as a sideline—you don’t create an Apple or Facebook account because you want to be able to sign in with Facebook elsewhere on the web; you create it ‘cause you want to use Facebook’s app.

Users don’t care—or don’t understand—federated identity, so they sure as hell aren’t going to be interested in blockchain-decentralised versions.