People are not used to tracking, but they will become. Web companies aren't going to stop doing it, as it is giving up enormous competitive advantage and quality of service.

DDG's "not tracking you" for example means Gabriel can never offer you personalized search based on your search history (he wouldn't be able to anyway as it's not in the APIs and it is impossible to be implemented properly on top of existing APIs). This is a tangible hit on the quality of your search results right there.