@SM are we talking strickly american market here? I'm a little confused on the demographic arguement. Remember an anime doesn't just thrive on it's own episodes, it has to survive on markitablity as well. That's why the main demographic is going to be young boys and men, cause you can make marketable products out of those shows. Take this example: If you go to a con what's somthing you're bound to see: figurines and T-shirts. What'll be most of the merch? Shonen and Seinen anime. If that's not convicing, consider that Viz at one time had shoujo beat (shoujo version of jump) in america, it was canceled 2009 while I can still easily find Shonen Jump on a magazine rack (not that there's any near me seeing how bookstores are drying up as we speak).
My point is that demographics for other anime genres will be smaller because it's a higher risk to investors.
Now that's not to say these series get under appreciated I think these series are getting more light as of late. Shows like Welcome to the NHK or Hanasaku Iroha which I assure you would never have seen the light of day in america in the 90's.
Yes, actually let's talk about the 90's. I'm seeing more and more this was pretty much the roaring 20's of anime and I mean that in the bad way. Companies were grabing at anything they could get and most of the time that was a bad OVA (Garzey's Wing anyone ) which ultimately led to the anime bubble burst (at least that's one cause).
Anime is an industy and an economy just like any other major buisness. It is constantly changing and will have its ups and downs. Also like any other industyr it is evolving to fit its demographics and to do that it has to listen to the fans. Feel free to make your meta-[C] joke now