It's worth noting that Amazon already has warehouses in major urban centers for Prime Now: Nashville, Richmond, San Diego, Portland, Los Angeles, New York City,

It's worth noting that Amazon already has warehouses in major urban centers for Prime Now: Nashville, Richmond, San Diego, Portland, Los Angeles, New York City, San Francisco. It seems plausible that by the time (i.e. in a few years) Amazon gets regulatory support for its delivery drones in a suburban community that it'll have saturated urban delivery markets in the US and will be ready to build warehouses in the suburbs.