Assuming a store with 9a-9p hours (every day), a 9-5 worker can shop 44 hours in a week, vs 40 they cannot.
You can’t just logic this kind of thing out mathematically because during those 44 hours people have lives to live and obligations to fulfill. Families to manage, food to prepare, appointments to attend, plus they need to sleep. Busy shopping hours are busy for a reason. Nobody wants to be stuck in a busy shopping center. They just do because that’s the time they have to do it.
Well, they do like their natto over there, so I’m confident they can find a way to stomach this.