Yes, because the fact that it's Eureka Seven is the only reason it has such a limited release... Not even Naruto and Bleach were much better off, and E7 is actually in more theaters than the first Naruto movie was. Anime in general doesn't seem to justify that type of investment unless the director's name is Miyazaki.
I'm in no way implying that Eureka Seven was a huge hit or anything, but I also doubt it did as poorly as you seem to think it did. They never would have bothered licensing, dubbing, and releasing the movie in theaters if it had. That's quite a bit of money to throw away on a supposed borab.