To say nothing of their characters, if their characters are infringing on someone elses copyright and the owner doesnt like it.There's gonna be a lot of butthurt furries when they find their favorite fanpieces gone if something like that happens.
That and I doubt "family-friendly" companies would appreciate the prolific erotic artwork their character creations are depicted in... I can name one or two popular artists who's artwork violates another's copyright like this, for drawing pokemon in erotic poses...Many anime companies see fan art/fiction as a source for the next generation of writers and artists, but Disney, Warner Brothers and other "family friendly" companies like Nintendo come down like the Hammer of Thor on people infringing.
Characters can be copyrighted, and the owners can sue you for drawing them in an erotic pose and distributing the image, profit made or not. Some authors have explicit rules regarding fan-fics, and allow them provided certain names or places are not used, others seem to turn a blind eye.... If I write a fanfiction basted on a movie, I'm not duplicating anything that's copyrighted. I may be using trademarked characters, but trademark != copyright, and has a whole different (somewhat more lax) set of rules.
My only guess regarding DMCA take-downs is that the characters owners dont want them shown in erotic poses on sites like VCL and FA because they see it as tainting the character's clean image.
Difference is, they might not mind the character derivitives being drawn on DA, DA doesnt allow you to post adult artwork as far as I know, but here, and VCL, adult artwork is almost the raison d'etre, so I would imagine you're more likely to be served with a take-down than DA is, on that fact alone. They dont want their characters being drawn as porn, so they sue. Though saying that, I wouldnt be surprised if a few copyright owners were anal enough to go after dA as well just to keep any unauthorised versions of their stuff being displayed.No. I will only comply with a DCMA if the same DCMA is served upon DeviantArt first. When DeviantArt complies... I comply, otherwise I say "THFFFFFPT!".