Guys they are aware of it..
But they simple just want it for the Japanese folk, its a really popular show there for years and it is that one "thing" which is pretty much "made by japan only for japan". Each country has something like that.
There they don't have to worry about the show contain or anything else or have to prove or explain what they are and why doing it.
Sure us here, we like it all but how many we are even? Every time i talk to friends or new faces they have no idea what that show is. Even thought they are on the internet as often as i am. Ofc its a little bit about money too. if they sub it and sell it in some country.. you really think they go over 5000 maybe even 10.000 sold units?
The regular show wouldn't be never subbed. If someday they really would go for subs. I am pretty sure that would be just the Batsu Game.. which is abit difficult too.
You have all those Japanese culture jokes, inside jokes between members and all those J-Stars having a act. Furthermore the punishment way etc.
Sure we like it to watch it but here again "how many we are?" if u go in a store and see the dvd u will never know by the cover what that is. You might buy one and watch and will like it or not.
I think what we might happen to see in the future is... That we get rip offs like the silent library (which is btw even on GNT not a real one as some peeps already said.. if u watch all episodes u see its always the same entrance and that's the entrance to the NTV building (or at else to their workplace) as far i am aware. Its even the same room/studio just different stuff put inside and angle always etc)
Give it few years and we really might see a usa version or uk version of it. Made with either normal peoples to win money or something like with local stars as example jungle camp? =P