It is pointed out that some of the reasons for this are that architectural standards make it hard to build new shops, in addition to the weak motivation of aged owners of these businesses, and the lack of successors.
これらの多くは経営者の高齢化による経営意欲の低下、後継者難に加え、建築基準との関係で新店舗の建設がしにくいことも指摘される。