It is not that easy. One delivery truck delivering to multiple people can be more efficient over them driving individually. A warehouse can be more efficiently

It is not that easy. One delivery truck delivering to multiple people can be more efficient over them driving individually. A warehouse can be more efficiently cooled and enlighted than a shop for individuals. A big kitchen preparing menu after menu can be more efficient than heating up the oven for a single use. A restaurant using larger supply packs can be more efficient than household sizes in packaging and transport. It's a case by case thing, but average for a few domains might not be that bad.