Earlier quoted context omitted.
> what's stopping chains from replicating this Probably volume. Chinatown is extremely dense and has such high foot traffic that it makes sense to operate without refrigeration, with goods stocked from neighborhood warehouses. Most parts of the country don't have anywhere near that level of density, so the economies of scale wont work out like they do in Chinatown.
Free market economics always works best in an actual marketplace, where vendors are competing stall-to-stall. Most Americans buy groceries from a large corporate-owned store that they drive to and has everything, which compete with other large corporate-owned one-stop-shop that you have to drive to.
The older I become the more I realize how absolutely devastating the development policies of sprawl and low-density have been to all areas of human endeavor. You can't have effective competition without density and an ability to start extremely small.