I think that distinction applies even more to audiences than to genres. Many readers want to read a story where the good guy battles dragons or villains and wins. The good guy may of course be a good gal, and of any of the pigmentations humanity comes in, but the important thing is that the basic structure not be messed with. This strikes me as a lot of what the Sad Puppies were about before Vox Day commandeered them for his own hateful purposes. Brad Torgersen, for instance, complained that Mercedes Lackey was Not Playing Fair when she got us to identify with her protagonist, only to reveal that he was
On that theme: From the File 770 lettercol, a discussion of how the Sad Puppies don’t like horror that’s too horrific.