Whither Japanese keiretsu? The transformation of vertical keiretsu in Toyota, Nissan and Honda 1991-2011

Drawing on institutional theory, this paper discusses the transformation of vertical keiretsu in the Japanese automotive industry from 1991 to 2011. By investigating the cases of Toyota, Nissan, and Honda, the paper empirically contributes to the debate on whither the Japanese economy is heading. Long-standing relationships to suppliers and exclusiveness have changed significantly in Nissan, while remaining stable in Toyota and Honda. New competition-based elements and more open support systems have been added to earlier governance mechanisms such as power and anshin (security). We argue that the studied keiretsu since the 1990s follows diverse and complex trajectories of hybridization, and we suggest that the Japanese economy is developing similarly.