this thread was debunked as soon as the figures from last year were posted. Things may be a bit down right now but it's totally an exaggeration. As someone showed in a different thread, the WW marketshare this week for japan is 5%, but for the year it is 15%.
Last gen Japan had roughly 18% marketshare of the console market. However if you take into consideration the growing marketshare of handhelds and expansion of other markets things aren't really different at all.
currently playing: Skyward Sword, Mario Sunshine, Xenoblade Chronicles X