Where this analogy breaks down is that the people sent to track you are invisible and can't be seen without the aid of special technology. So what you end up telling people is that they are being followed everywhere by invisible ghosts, who's only desire is to change what ads appear in their newspaper. And it appears that the reaction of most people is about what you'd expect. If a store has policy of "If you come in…
If that's all you got from it then I should really do my best to write better. One of the key parts - to me - is that the data silos start trading your data as if it is theirs to whoever pays for it, and that goes a lot further than a real time bidding on ad space, even if that was the initial drive to collect that data.
In the end, they get my data, along with a picture and whatnot and I personally wasn't even involved. Heck, I could even use a dumb phone and my phone number would be all over the place.
Recently, Facebook asked me once again to add a phone number "to protect my account". One time, my real phone number was prefilled in the box! They pretend that they don't have it, but since some of my friends use messenger, they surely have it somewhere in my shadow profile (a download of "all my data" obviously didn't contain it).