I had the exact same thoughts upon reading this article, having spent quite a bit of time in Japan. Businesses are liberally sprinkled all over residential neighborhoods, from bars, cafes and grocers to home electronics and repair shops. The density (and corresponding walkability) of Japanese cities is a big factor that supports this kind of development. The armchair economist in me wants to theorize that this might be a contributing factor in Japan’s exceptionally low unemployment rate: the ease of starting a micro business from your doorstep.