See also Dark Data from DEFCON 25: https://youtube.com/watch?v=yWqdTVQsnPg
But it doesn't need to be marketed in such a sinister fashion. In 2012 when Google Maps informed me of delays along my usual commute, complete with a GPS trace of my route home, completely unprompted, I started turning off location history (lol, yeah right). I didn't even know they were collecting that data, much less analysing it that hard.
These days, that would be considered a feature - not a dystopian hellhole, and you would be a Luddite for turning off this new smartphone augmented brain. The product will make you happy. [0]
Welcome, to City 17. You have chosen, or been chosen, to relocate to one of our finest remaining urban centers. It's safer here.