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Maybe in ad-tech, but many organizations have lots and lots of real information.

Insurance companies are a great example. The data providers for pharmacy and automotive are another.

Most companies would never have to go the lengths insurers go. They'll hire PIs to literally follow claimants around IRL to make sure they really do have a workplace injury. I know this because I worked at an office tasked with reviewing and annotating the videos they recorded.

Well, that was true back in 70's and this true now. If some brick-and-mortar business knew a lot about you (like your bank) -- it still knows a lot about you.

Ad-tech is different by boasting that they do know a lot about you, while in fact they have no clue.

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