This topic is closely related to the problem of the "unipolar concentration on Tôkyô" (Tôkyô ikkyoku shûchû), i.e. the … domination of the Tôkyô Metropolitan Region not just in population or manufacturing distribution but in the geography of the … global city like Tôkyô ? The author's hypothesis on the problem "agglomeration economies" vs. "agglomeration diseconomies" is …