Comment by nroets

An "account" which is somehow linked to enough of your browsing history to determine if you're a scraper or a spammer. Then the company(s) administrating these accounts will be able to collect a lot of info on the account holders over decades.

Google hardware attestation idea won't give them that much data: All Google will know is which phones visited which websites and only when the website asks the phone for hardware attestation. If the website gives the phone a cookie for bypassing subsequent attestations, then Google will know only of the first visit.