A Song of Ice and Fire comic book adaptation

[Albertosaurus Rex]

Concerning my recent absence: I have been totally engrossed replaying Baldur's Gate. Now that college is starting again, I am starting to fall back into my normal rhytm.

George R. R. Martin has announced a comic book adaptation of A Song of Ice and Fire. Now allow me to ask the question: why? Why another adaptation at the moment the first adaptation is getting started and the main series isn't even finished yet?

Look, I don't know why it's taking the guy so long to write A Dance with Dragons, but I can wait and I'm sure it will be awesome when it finally comes out. However, there seems to be an awful lot of stuff recently with GRRM's name on it that he didn't actually write himself. The following works are either ongoing or will be released soon:

Fort Freak, a new Wild Cards book, and more are coming.
Down These Mean Streets, another cross-genre anthology co-edited with Gardner Dozois.
Game of Thrones, the tv adaptation of ASOIAF.
The comic book adaptation of ASOIAF.
The comic book adaptation of his novel Fevre Dream (Or has that finished already?).
A comic book series based on Doorways, his tv show that never made it past the pilot episode.
A film adaptation of his novella The Skin Trade. The rights have been bought and there's a script apparently, but nobody really knows at this point whether the film will see the light of day.

Look, it might all be great stuff, and admittedly he did do editing duties on the first two. But what did he actually write the past six years? Two or three short stories? And yet his name is all over the place.