[Danieru]

That is indeed a fancy building, but the product selection is poor. Notice how all the shown food is prepacked low shelf life snacks.

Japan's domestics convivence stores strength is in their supply chains. They will keep a single shop stocked with over a thousand products, many with short self lifes and low in-store stock. Thus the stores survive on daily restock. The bento and sandwich collection will stocked once a day in most locations, multiple times for busy downtown locations.

All of the short shelf life products are store label products made by child-companies of the owning mega-corp.

7-11 is owned by 7 & i holdings, which also owns Ito Yokado. FamliyMart is owned by Itochu (hence their prime chicken, as itochu owns the chiken farms). Lawson is owned by Mitsubishi Co.

A fun example to drive home the vertical integration: FamilyMart's uniforms are made by another company owned by Itochu. The kombini are in effect the tip of the icebergs of various mega-corps.

[biztos]

My nearest convenience store in Bangkok is a FamilyMart, but sadly: not have chicken.