Yeah that makes me sad too. it was like a movie made up of all the things I love. it was done in a style that I can't get enough of and it references to all sort of things i grew up loving from old comic books to shorts to old Superman cartoons.
If I were a billionair I would buy the rights and produce an animated series of Sky Captain on the internet sort of in the style of BTAS,that would be a cartoon I would be unable to get enough of.
I may be the only person on earth who cheered in the theater when Dex turned up on screen in Avatar,even if he was a villain. I own the movie on DvD,HDDvD,VHS,and BluRay. That is how much i love Sky Captain.