you guys!   You made me try and google some stuff about anime ;)
I found what's written on wikipedia quite interesting.  From: http://en.wikipedia.org/wiki/Anime#Current_reception_in_the_United_States

Current reception in the United States

AnimeNation’s John Oppliger had this to say on the matter:

The support for anime among American anime fans is very strong. The availability of anime in America is truly impressive, especially within the anime fan community. Awareness of Japanese animation in America is at an all time high. However, mainstream acceptance of anime in America lags far behind the advances anime has made in other respects. A close examination of the support for anime on American television may provide a revealing and realistic gauge of the actual penetration of anime into America and American culture. Anime may seem like it's tremendously successful in America because its high profile, but the facts tell another story.

According to AC Nielsen, Pixar's The Incredibles sold 16 million copies on DVD in America last year. Shark Tale sold nearly 10 million copies. Even the DVD release of Bambi sold 6 million copies in 2005. In comparison, all four Inuyasha movies combined have sold just over 1 million copies in the past year and a half. Evidently, the success of anime in America is very relative. American anime fans are very devoted. Through underground means hardcore American fans now have access to brand new Japanese anime before even many Japanese residents do. America's anime fan community is influential because it's affluent, intelligent, and motivated; but it's not very large.[10]

—20px, 20px

Despite assessments like that, and its rare and limited release in American theaters, anime's legitimacy and respect in North America has grown well enough to garner major native artistic awards such as the Academy Award for Best Animated Feature in 2002 for Spirited Away by Hayao Miyazaki. Anime has a dedicated fan following in English speaking countries, particularly active on the internet, and at conventions regularly held throughout the US and UK.

Bck to my own commentary:
It appears that Anime doesn't have enough of a following to support a feature length movie release at regular box office. I'm sure if it did, they would have done it already.  Also, with lack of anime in theaters, of the interest is high, one would think that the DVD would be selling like hotcakes. Looks like they are not. 

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