when will Japan's camera industry fall?

it seems that that Japan's electronic industry has fallen into irrelevance however, the camera industry is still dominated by Japanese companies, and I predict it will only be a matter of time before companies like Nikon, Canon, Panasonic, Sony etc lose their positions as market leaders in camera industry.

How long do you think it will take before Chinese, Taiwanese, American and Korean companies start dominating the camera industry and drive Japan into irrelevance like other electronic industry?