They do more than just track you. They hack you, record what you do on your computer, learn your keyboard/mouse habits, watch how you view pages to determine if you read them or just scan them, block web pages they don't want you to see, delete files you collect or create, change/delete parts of documents, remove software functions they don't want you to use, cause computer problems to stall you and waste your time, etc., etc., etc. They can trick people around you into interfering in your life in innumerable ways, and know how to get them to do things to interfere without knowing they're doing it. They use rumors and gossip to great effect, turning people against you without you ever knowing why. They know more about you than you know about yourself, and they use that information any way they can to control your life without you ever knowing it. Social credit scores are being used to determine how often and to what degree they will do this. This is the future of Marxism.