Why is the internet so fast in Japan and South Korea?

Question

Why is the internet so fast in Japan and South Korea?

Answer 1

I didn't realize it was any faster in any other place as long as you are running on a T1 broadband connection.

Sorry

Answer 2

compared to.....? Japan and Korea are ranked 3 and 4 respectively among broadband countries (behind America and China).

But I do think file sharing is less common in Japan, which might free-up bandwidth