Earlier quoted context omitted.
I personally don't buy into the notion that advertisement is inherently good or necessary. Especially when the "best" ads effectively manipulate emotions and remain in people's subconscious. A corner store cashier does not have the raw processing power and money of an ad network. If they tracked one customer with as much of vigilance as the average ad network, they should probably get slapped with a restraining order…
The article you linked to, regarding Target, is exactly what your corner store cashier is doing. There is literally no difference. You are conflating two different things - stores retargeting existing customers and recommending products they think are relevant vs. ad networks like Google that track you across channels so that they may serve the most relevant ads to you based on your interests. Neither are bad, and bo…
Ad networks that track you are necessary?