Communism was a threat in Japan, through their trade unions and the communist party. But the companies co-opted the trade unions and Japan is always suspicious of outsiders.
Also, they wanted to copy a winner, so they copied the US after WW II. Deming wasn’t listened to in the US, but he was highly esteemed in Japan. Toyota Production System? Deming’s ideas adapted by the Japanese.
Another reason why the bomb was a good thing, kept the Soviets out of Japan, save for Sakhalin Island.
I've said in the past that we won the war, but they won the peace.
In my early career I lost two jobs to Japanese competition, I was much more impressed than angry, they beat us fair and square, at our own game!