I'm not sure I'd agree that The Incredibles
is aimed mainly
at kids, given how much lethal violence it contained, and given how much nostalgia for '60s spy movies and pop culture drove its designs, music, etc.
Besides, how is that a factor here? We're talking about comic-book superheroes. Lots of superhero adaptations are family viewing suitable for children. Heck, believe it or not, there was once a time when the actual comics
were suitable for children. Not to mention that most animated films in the US are presumed to be targeted at children. So if we're looking for reasons why studios aren't interested in releasing animated superhero films theatrically, I don't see why the age of the target audience would be a factor in explaining that.
And it's not as if there aren't comic-book superheroes who are deconstructions to one degree or another, or who tend toward comedy. Why not a CG-animated Plastic Man
movie, say? Or a more authentic version of Howard the Duck
? Or a feature version of The Tick