Where this gets real distinct is in delivery: Amazon is currently purging its warehouses of stock from thousands of vendors so it can keep stock of Amazon-brand and big box brand alternatives to those same products. (See: https://www.bloomberg.com/news/articles/2019-05-28/amazon-is...) So, the Safeway equivalent of this would be you going down the sugar aisle and finding exactly 1 or 2 bags of competing brands with a note that says, "Hurry! Almost out!", and each bag has 10lb. anchor attached to it. But there's 100 bags of Safeway sugar, and there's a line of employees offering to carry it through the store for you do you don't hurt your terribly sore shoulders...
How would you feel if a Safeway associate slapped a tracking device on you when you walked in the door, and then didn't tell you they were recording everything you thought while you were working your way through the store? That's how Amazon.com works. Oh, and if Safeway could just look at your other recent thoughts and know you fapped about 20 minutes before you walked in the door? That's also Amazon.