I don't know how you can say this:

> And quite an elegant one at that. Without involving any government identifiers or anything else.

and this:

> There is a law, and there will be others to help improve it.

> Combined with the widespread implementation of TPM, this will become even more feasible.

Without coming to the obvious conclusion that the next step will be even further down the road of tying your every action back to a real, verified, trackable identity.