I think groceries can work, but fresh produce needs to be fresh; not from a warehouse far away. But groceries that are not sold, go off. I checked amazon groceries. Prices are more expensive than at the shops.
if someone is going to the grocery store to buy fresh produce, why wouldn't they just get the rest of the items when they are shopping?
the only things Amazon is going to be able to deliver is non-perishable items. They can't maintain quality on perishable items.
so I can buy some canned meat or bags of rice on Amazon.....survivalist type food stuffs or maybe some tang for the rocket trip when the Bezos droids book themselves for a space mission to colonize Mars.