It's great to see awareness of the futility of pseudonimization bubble up to non-technical press. Unmasking of bulk-sold pseudonymized user data is an external

It's great to see awareness of the futility of pseudonimization bubble up to non-technical press. Unmasking of bulk-sold pseudonymized user data is an externality, like pollution — those who bear the cost when the data gets reidentified are the users, not the buyers or sellers. Therefore the data belongs to the users and propagation should be severely constrained.