That's a good thing as long as their exchanges are regulated. Don't forget MtGox was located in Japan, and they dropped the ball in monitoring it.
Gox has been an international place from the beginning. Funded by americans, run by a frenchman, into the ground actually the smoldering remains are still not cleared up.
There are no explanations however why techaddicts in Tokyo didn't got onto the Bitcoint train. Some tamagotchi like toy and we would be living in a different world today.
and what i am amused is that Japan and Korea are good at electronic products and from what i know they never come up with an ASIC mining machine but China came forward with a competing product and they captured the bitcoin mining market and with the new regulations i think we see a shift in focus. 
