To your point about perishables, services like hellofresh are doing just fine shipping perishables in a sealed cardboard box with an "icepack" (not really ice).

To your point about perishables, services like hellofresh are doing just fine shipping perishables in a sealed cardboard box with an "icepack" (not really ice). With that in mind, I don't understand why the logistics Amazon has achieved with their warehouses and delivery drivers couldn't work for grocery. Unlike hellofresh, if they can re-fit their vans, they can do better and cheaper with less spoiled food. Amazon's idea of a grocery store where you don't have to check out (they use cameras+ML) was a good start but imagine if customers could use the same system to pick items in their warehouse instead, and amazon workers and/or machines select and pack them in a cooled box and deliver it same day just like they do with packages. Existing grocery chains don't want to undercut their brick and mortar business, so they keep trying to make delivery a side hustle. The taxi and restaurant industry did the same thing and failed. Americans are complaining a lot about groceries and grocery chains price gouging. And you also have the environmental benefits as well as societal benefits such as elimination of food deserts.