Well heres my take on Adult Swim hurting the anime industry. I find that they've done a great job introducing thier viewers by bombarding them with great animes such as FMA,Eureka7,Inuyasha, and more. Now here comes the hurt. The times when they air the shows and the other branches of anime on tv.
Anime at its present form in America is having a hard time being discovered by people. When Toonami went down the drain Adult Swim started implementing alot more anime into thier scedules(remember saturday night anime?). Right now the only shows you'll see are Deathnote(which is too linear to just jump right in and enjoy) and Bleach. Naruto in America is basically the current generations DBZ.
What most people have not learned of is something called The Anime Network which basically is a channel or VoD service depending on your cable/satellite provider. The anime they put out is massed in those great but very underappreciated genres but they dont have any big animes to give rise to industries specifically designated to the anime community.
So the basic point to my rant here is that Cartoon Network/Adult Swim are "monopolizing" the more likable/popular animes while the networks designated to anime have to deal with not specifically sub-par anime, but less likly to become iconic anime.