So I'm one of those who doesn't care if Google tracks me or sells me as a product. [ * ] Is there actually some real, tangible harm that can come to me from using Google products? Not theoretical stuff, not stuff that is less likely than dying in a plane crash. Something that is actually likely to happen, that will affect me in measurable, negative ways? I'm really trying to come up with something, and I'm really try…
* Propaganda: Because you understand what people need to hear, it’s a perfect tool to influence opinion. Of course, this doesn’t happen in your country (it never does). A recent popular example is the Cambridge Analytica scandal. Thankfully this evil cooperation does not exist any more (by changing its name).
* Reinforcement of monopolies: You need to hit a critical mass to use data effectively. Therefore, big players will have an advantage over competitors and can provide better products. Therefore big players …
* Reinforcement of dictatorships: If things turn bad they turn really bad. User data is gold in the hand of dictators. One reason is that is helps with propaganda, but it also helps to identify resistance. If for some reason your country ends up in a regime, it is going to be hard to get out of it.
* Self-censorship / freedom of speech: There is plenty of evidence, that we constrain ourselves because we know nothing online is anonymous. This also depends on which country you live in.
There must be a plethora of side effects I didn’t think of right now.
You have to decide how “theoretical” these issues are for you. Maybe it is more a thing of “believing” – such as vegetarianism (although we all know eating meat is bad for the environment).