I still could not relate that
those would be bad.
I believe the ad tech industry would literally show alcohol ads to recovering alcoholics if A/B testing or 'machine learning' said they converted at higher rates.
I believe the ad tech industry does not protect medical and political data with the appropriate level of privacy protection. So even if they wouldn't sell their database of gay Iranians to Iran, I think they'd get hacked by them.
And I believe some companies probably would sell their gun ownership database to a government that wanted to arrest gun owners, and their gay bar customer database to a government that wanted to arrest gay people.
Or rather, would you rather have
useful advertisement or spammy
advertisement?
I run an adblocker, so you can guess my answer to that!