It's odd how we talk about something like centralized identification without the other areas of privacy limiting changes we are experiencing. Online we are tracked, logged and categorized like no other time in history. Even the basic means of conducting a business transaction leaves a digital trail whether it's a wire transfer, credit card transaction or bitcoin payment.
Authoritarian countries have combined a cashless society with 24/7 surveillance of all kinds to create a black mirror style social credit system.
None of this would be possible without first having a form of centralized identity. This will likely be coming soon to a democracy near you due to the level of state control it invites. Someone needs to get working on an ad blocker we can use in real life. I suspect it will be built around aluminum foil.