When I get groceries at Stop & Shop, I never buy olives. So based on my consumer behavior, Stop & Shop has likely assumed that I dislike olives and hence never markets them to me. But the company may be surprised to learn that I’m SO keen on olives, I purchase them at a specialty market where I can buy them in bulk.
Once you leave the doors of a specific store chain, their data network is often incapable of identifying the purchases you make at any other retailer. For....