Yeah it definitely looks that way. Unless they can get it together with the rights for the Milestone characters, I don't see em achieving the desired results. They could coast by on the movies, but that's a big "could".

Crazy idea time:
Do you think them creating characters in the movies (once they gain more momentum like Marvel has of course) could work to bolster the diverse roster? Since most people watch the movies and aren't really into the comics, why not bring the new characters and ideas to the larger audience to really see how they catch on? After they see how much $$$ these characters bring in/don't bring in, then they could choose to push them in the comics. Similar to how Guardians of the Galaxy (yes I know they're from the comics) rose to prominence in the comics because of their on screen success with the audience having no prior knowledge/awareness of said characters and there being no promise of them catching on.