As reported by Korea Beat, the Korean government has explicitly stated that it wants to strengthen English education in Korea:
Back on Hangul Day, in November, the then-presidential candidate said it might be a good idea to teach Korean history and language classes in English and got himself roundly criticized as being “like the Japanese imperialists”. Since then, however, the ESL trends have gone in precisely that direction: after his election education boards across the country have moved for more English-only instruction. Seoul is experimenting with English-only math and science classes, English teachers in Gangwon-do are being told they must do more lecturing in English, and as president-elect Mr. Lee restated his desire to see more English-only classes — in fact, every single high school English class starting in 2010 — and last week saw Seoul National University come back to the man’s original proposal by bringing in American scholar Eugene Park to teach a Korean Studies course exclusively in English.
So, of course, all of this is great news for English hagwons, and for the foreign teachers who work there.
In a world with an increasing need for English, Korea is a nation with an insatiable appetite for this global second language.  The Korean government is now bringing up its end of that bargain.