> When a shopper enters a Walmart they have a fixed amount of money in their pocket and generally a good idea of what they want. You might get them to grab a ca

> When a shopper enters a Walmart they have a fixed amount of money in their pocket and generally a good idea of what they want. You might get them to grab a candy bar, or buy the next grade up of tires, but it is effectively shifting dollars that would have been spent there already. Revenue growth is all about adding more essential items to the store and eliminating trips to other retailers. People with credit cards shop at Walmart too, and there's a significant amount of marketing effort done to convince people to get new items they weren't planning on while they're there. Plenty of people there can be sold new things without going into a "oh, this new toy for my kid on the aisle endcap looks nice, time to put away the dozen eggs because I only have X dollars allocated for this trip" same-net-spending reaction. (Anecdotally, my behavior is basicaly the opposite of what you describe: I got to Amazon when I already want a specific thing, and I find their browsing experience god-awful. I go to a physical store when I want to browse or shop without direction. Maybe I'll end up with a new shirt, or a book, or a video game, or a plant... maybe nothing...)