Comment by godelski

  > Let’s say IP address, fingerprinting and cookies.

This will still not lead to a binary outcome. Cookies can be deleted and fingerprints aren't perfect. Nor is Google able to obtain this data from sites equally. Amazon and Facebook certainly are not sharing liberally, as this is a big part of their revenue streams too. Their competition can benefit us in our defense.

You also forget time. There is historical data, current data, and future data. You can tackle all of these, and they should be addressed differently. You can remove data and that can prevent future players or potential sales of your data. But we should also be really aware that the future data is most important. You change over time and they want to track these changes. The more you can limit their access, the more you fight back. One easy method is to use email masks. You can do this for free or relatively cheap, but I've changed most of my logins to unique emails as well as unique passwords (fwiw, Mozilla Relay integrates into Bitwarden, making this simple). I've now been able to track who is leaking my information to who, and better adapt to the environment. It also means that if one of these sites gets hacked than I can easily burn that email address and not be forever locked in a circulating list.

So I just want you to realize, you haven't been defeated yet. As long as you generate new data, there is time for you to fight back.