Having thought about ads, what is the ideal feedback info channel loop from manufacturers to consumers? How best to distribute the information of who can manufacture what at what cost/price and what does it do and when is it appropriate for consumers to receive or pull info from where? And if it ends up being a monopoly of 1 centralized system how do you allow for a competitor to break through without ads?
A counterexample is not a valid refutation of the general point. It can be both true that Google will deanonymize you, given the chance, and that anonymous attestation is possible.