right. until it doesn't, like it wouldn't for someone who actively avoids feeding their personal information to the goog. and it is sounding an awful lot like the fail case is full denial of service, without any option for the user to prove themselves.

Recaptcha doesn't care. But totally unrelated, it just accidentally worked out to be awfully convenient for Google's other surveillance products embedded on the same sites, which do care quite a bit about how long and how often they can follow me with a single unique identifier.