> their literary quality In one book title of four simple words... "50 Shades of Grey" The biggest market has always been romance, followed by mystery, and ne

> their literary quality In one book title of four simple words... "50 Shades of Grey" The biggest market has always been romance, followed by mystery, and neither of which requires tremendous literary quality. Beware of survivorship bias when claiming otherwise. As for the rest of the argument... it speaks for itself.