Gaiman: When Dickens published A Christmas Carol nobody went, "Ah, this respectable social novelist has suddenly become a fantasy novelist: look, there are ghosts and magic."
Very true. And there's still some of that today. Some literary writers get a pass on fantastical elements; others are shoved into the genre mudhole while the rest of the literary artistes point and laugh. And of course, in Dickens's day, he was pretty much considered a sentimental hack who catered to the ignorant masses, so there's that; even though there wasn't a genre mudhole to push him into when he published A Christmas Carol, he wasn't exactly revered by the literary establishment of his day. That came later.
It's a great conversation, with touches on Westerns and porn and musicals and improving literature. Go read it. :)