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1) The antitrust hearings are literally dog and pony shows. Nothing has come of them, except slightly increased lobbying spending by Google and Amazon.

2) Other people give it to them, not just you. I tried for years to keep my face off Facebook, and finally made a page to take control of my "shadow profile" because people kept putting it there. Companies often give it to them too, through data brokers.

3) Google's ad auction technology will make authoritarian government much more efficient, the same way IBM's census technology did in the 1930's and 1940's.