Apology for cross posting.
The following is a collection of articles on this issue from newspapers and blogs. They are all in Japanese.
If you find English article on this issue, please let me know.
Hiroyuki N. Good
Chair, Japanese Company Histories (Shashi) Interest Group
Japanese Studies Librarian
University Library System
University of Pittsburgh
207H Hillman Library
3960 Forbes Ave., Pittsburgh, PA 15260
E-journal "Shashi: the Journal of Japanese Business and Company History"
My profile: http://pitt.libguides.com/hiroyukigood