Sidonix, you are sooo wrong :P
Okay, I admit that most of the people that listen to j-rock do it because it's japanese music and as you said, it's something commercial but:
Read this:
http://en.wikipedia.org/wiki/The_PillowsNu e ceva de genul, nu stiu, Gackt sau mai stiu eu ce formatie comerciala, tipii aia chiar au talent. Sunt una din cele mai longevive trupe din Japonia si exista de dinaintea acestei manii cu j-rock-ul.
Poate ca cea mai mare parte din j-music e cam j-shit dar nu-i baga pe toti in aceasi oala, ok? Oh, and bringing some arguments wouldn't hurt too :)