Eighty percent of home internet users in Korea are connected at 20 megabits per second (or better), which is sufficient bandwidth for hi-def video (1024 by 768 pixels per frame and 30 frames per second). Certainly, bandwidth almost as good as that will be delivered to the masses in South Africa and the US in the not-too-distant future. By comparison the 2x improvement in the compression rate of h.264, although worthwhile, is relatively unimportant.
Incidentally only thirty percent of Korean households are connected to the internet. The average monthly price in Korea about US$40, which of course is too expensive for an occasional user.