Same day delivery services like these have existed in Japan for years. They're wonderful. But they lend themselves to low weight/high value goods that are easi

Same day delivery services like these have existed in Japan for years. They're wonderful. But they lend themselves to low weight/high value goods that are easily shipped. And to highly concentrated population centers where the higher costs of same day shipping associated with operating a warehouse or retail store in an expensive environment can be amortized over higher margin goods.