They wouldn't. From the description this is more like a grocery store that only has fruits/vegetables and refrigerated items. You would grab those items that you need, electronically order everything else for delivery to your house. I would guess they are aiming for the people who like to select their own fruit/vegetables/meat cuts and are worried that the items if selected by the store employee would be bruised, rotting, bad cuts of meat, etc.
The standard convenience store would go on as it is with gas/snacks/lottery cards, etc. Those would not be provided by these stores.