I believe that since most MMORPGs allow you to play as cute girls, these manga/anime franchises decide that it's best to pander to the MMORPG gamer audience by focusing on cute girls in their manga/anime (let's face it, the male protagonist of SAO becomes a cute girl for a while). That's probably a reason why the franchise has been grossing so high since it started.
Not saying that it's a bad thing at all, because it pretty much started with dot-hack, which I hear is great for the most part. There's even some modern anime that draws influence from them like Baka to Test - RPG logic in a school building.
Not saying that it's a bad thing at all, because it pretty much started with dot-hack, which I hear is great for the most part. There's even some modern anime that draws influence from them like Baka to Test - RPG logic in a school building.