Henry
Autoexreginated
The answer, and this is something that is a tough thing to swallow, is that "mainstream fantasy" has changed dramatically in the past forty years -- more specifically, in the last twenty. It went from pretty simplistic "guys in armor and wizards in pointy hats and magic wands" to more complex characters like Cloud Strike and Princess Monoke, and materia and steampunk. It changed from Black Company to Full Metal Alchemist, and from solid renaissance-cusp technology to a mix of magic and 20th century tech. Just reading the articles on old Dragon magazines, like the articles on dungeoneering, versus reading the flavor text from something like Book of Nine Swords, can give one a sense of the changes.