It's because Xbox is made for insane westerners. That's why the only Japanese person to own an Xbox was the "diary of a mad gamer". He was mad and wore a mask to conceal his identity while playing the Xbox. What a crazy dude, who would even do this in such a peaceful country like Japan?
Honestly I don't even know. Billy gates tried to strong arm his way into the console market and legitimately burned out Scalebound but also True fantasy live online and God knows what else. The unfriendly appearance of master chief represents a cold capitalistic unfeeling plastic man who works for burger king selling burger king Xbox 360 games in the city of racism aka America burger land.
The damn system was always so big you had to throw out the family katana just to place it in your abode. The humble Japanese domicile is no place for the beast of the black box. The Xbox is like a black hole of despair like the description of that one kid in the illusion of Gaia manual. Owning one is akin to fan death but in Japan, it's the leading cause of population decline.