Well, for one: Korea has always been ahead of the curve on the Internet. By the mid 90s there, cyberspace was commonplace. Albeit for the average Joe, the early Internet was a bunch of basic, low-tech message boards, the precursors to full-fledged forums and such. These days, by and large and on average, Koreans have some of the fastest internet speeds in the world. Basically, the whole country adopted the Internet sooner than most others and therefore, many Koreans became habitually present online. That set the stage for all kinds of subcultures and communities of users to develop, including eSports and consumer electronics where you would expect overlap of interests (i.e. input devices). In addition, I generally believe that urban life of densely populated metropolitan areas is conducive to sharing hobbies; more people tends to increase diversity and resources. It's quite simple, but maybe not so obvious to some people unless you think about it: You can use the Internet to actually meet people in person to learn, exchange ideas, and collaborate on projects!
I'd be interested in a detailed history from the founder or elders of KBMania, if we ever get a chance to snag a bilingual interviewer.
