Hmmm...a very interesting question with very interesting answers.
I don't think J-pop would sell very well here in America; unless a bunch of anime/j-pop fans actually banded together and MAKE it sell.
I think I said this here before once and I'm going to have to say it again; America doesn't promote Asian people like they should. You hardly EVER see an Asian in a Pepsi commercial here let alone in a movie unless it's something to do with martial arts or some kind of stereotyping role. And if it's not that, the movies that give them serious roles are in limited theaters or just totally suck with horrible voice-overs.
All the American public seems to want is what will corrupt pop-culture even further. They won't advertise anything that will try to make it stable. And if they do, it's only a plot to make it into something sexual or violent in the end.
If you look at BET for just fifteen minutes, your face will be slammed with ass and breasts during the entire time. You might even see the occassional gun toting guys saying "they'll kick anybody's ass."
And if you look at MTV you'll see pretty much some of everything from sexual situations to kill off your frame of mind, to watching stupid rich girls who cry over something about not getting a car for their 16th birthday. (I'm 16, I didn't get a car for my birthday...am I supposed to get an episode on MTV about it?)
, I just live my life and keep on going on with it.
In other words, the American music/movie industry wants you to live in a fantasy world and stay in it. They don't want you to be different, so therefore they're not going to promote anything different from the norm.
But if this is what you really want to do, your going to have to do it until it breaks through into the mainstream and if that's what you want, you can't give up. EVER.
Who knows, maybe you'll be the one to fix this "sexual revolution" we're in. But either way you do it, I'll be behind you a kabillion-%.
