most of china and korean gamers dont play pc games at home, they play them in those gay internet cafes.
so companys cant earn the best money with subscriptions or retailing the game CD's
the best way to earn as a game developer that part of the world is to make a free game with pay4content.
its not a lazy system, its what works best there.
not going to earn up on selling software when most your gamers don't own a home pc.
and that would be pointless with subscriptions when you play an hour a day.
even world of warcraft china had hourly pay2play payments instead of monthly subscriptions (had both options)