It's also a culture thing. In Japan every supermarket and convenience store sells a lot of high quality fresh food (sushi, onigiri, a lot of different bento) th

It's also a culture thing. In Japan every supermarket and convenience store sells a lot of high quality fresh food (sushi, onigiri, a lot of different bento) that is meant for same day consumption. This only works because a large part of the population actually buys that kind of food for the same day. The shelfs are mostly empty in the evening. I went home empty handed quite a few times when waiting for the reduced prices one hour before shops close.