I think this is a problem that can be solved with a degree of centralization, say a simple website that allows you to manage your identity: everywhere from ENS

I think this is a problem that can be solved with a degree of centralization, say a simple website that allows you to manage your identity: everywhere from ENS to SSO in one place. Sure, you could argue that it's going back to the old model, but the underpinnings are still open and the only way the tech will make it to the mainstream is with centralization.