Well, it seems that they might have some good ideas, as well - eliminating mandatory hiring practices, making the area tax-free for international companies, etc. You're right, it might be a pipe dream and all, but Korea is becoming a bigger and bigger powerhouse economically, so if they can convince some major businesses to come, they'll be positioned for success.

Of course, I'm not sure why the other cities like this haven't worked, but I seem to remember that Brasilia suffered from bad location, lack of true economic interest in the area, poor-planning, and generalized corruption - but I could be wrong.