Whatever Japan does, it does extremely well. I bought a 0.1 mm nib size fountain pen in Japan last year. I expected it to be rough and unevenly release ink, considering how thin the nib is, but was pleasantly surprised at how good the pen was. It was a delight to use. It works smoother than my parker fountain pens, which I thought were pretty good.
Sony isn't really Japanese any more, it's a multinational corporation with operations in many places, including the US. This is like trying to claim that Ford cars are all-American (they aren't, they're largely made in Mexico, and they have a large European subsidiary too).