> google will sell the fact that you visited that porn website to anyone who is interested.
Has Google has actually done this? According to Google, they don't sell personal information:
https://about.google/company-info/how-our-business-works/#:~...
I'm willing to believe they've broken this promise, but if you can point to some actual proof, I'd like to see it.
Look up real-time bidding.
Some context: https://www.classaction.org/news/google-breaks-user-privacy-...
Google does not sell personal information, they rent it out. Targeted advertising and remarketing relies upon building up a huge dossier on each Internet user and then matching those dossiers to ad bids.