The theory of Price Discrimination, simple stuff, for anyone who isn't up on the econs 101 jargon, looks like it's here: https://www.investopedia.com/terms/p/price_discrimination.as... Everyone including you will do it whenever you can when selling. The logical place surveillance capitalism is going isn't pretty. Will regulation protect consumers or will Goog, FB, Apple etc capture a good amount of everyone's consume…
Mostly because you don't have to buy any of this. If it's that unfair, figure a better/cheaper way to do it yourself, otherwise quit complaining that the poor ppl have it so much better