I wonder if Deming (https://en.wikipedia.org/wiki/W._Edwards_Deming#Japan) contributed to the Toyota Way? A lot of the Toyota Way seems inspired by his teachings.
He is almost revered, in Japan.
I'm told he was laughed out of the US, which is why he set up shop in Japan.
Or they go "they won, I guess we're obligated to try doing it their way at least once".
In that context it is not really surprising that Japan rejected many of its old institutions and ways.