It's not that simple. The real question is what is the minimum efficient scale for a retail operation (i.e. at what size do they get most of the discounts and o

It's not that simple. The real question is what is the minimum efficient scale for a retail operation (i.e. at what size do they get most of the discounts and opportunities of sourcing world wide/economies of scale). It's way smaller than walmart but way bigger than a mom and pop shop. Then an ideal world would be a retail market big enough to support a whole bunch of those so they all compete and profit margins are minimized so most of the benefit flows through to the consumer. So yes, I would be very happy without walmart but I would also be very happy without mom and pops being the dominant retail vector.