Japan has SERIOUS issues with NIH syndrome. They were on the cutting edge of technology when they led it. Not so much when it would require adoption from American and Chinese suppliers and service exporters.
There's a significant U.S.-Japan language gap as well, which tends to work to the disadvantage of whichever side is not currently ahead technologically. Very few American engineers read Japanese-language journals or trade press, and very few (though somewhat rising) Japanese engineers read English-language journals or trade press.
