Rate-limiting ID acquiring and having them to be short-lived deals with malicious parties. Having for example a token that proofs that you're a legitimate person for 1 day, but your identity is tied to it for the duration means that you can only abuse the system only so for so long. For longer periods e.g. a month, half a year, you can provide pseudoanonymity, and it poses bigger issues with privacy, but a person who is willing to be subjected to be identified for a certain period of time gains certain privileges.

Sounds very dystopian though, but not having ID won't stop the tech giants from profiling you anyways.