Well, first and foremost because so many people in general try to achieve this.
Then multiply that by the fact that they’re Koreans,
which means they’re mostly going to be hardcore gamers,
which means they’re going to put the willpower and dedication into it.
Then there’s their unity. Redditors talked about how big amounts of Koreans are farming relic sites in null to make isk. As soon as someone figured out a way to easily make stable boatloads, others will follow. Or maybe they’re already working on that, because all necessary information is out there anyway.
Considering that ISK is one of the most important resources,
making sure of a stable influx of ISK is one of the top priorities.
I simply expect nothing less from a big group of hardcore gamers.
Now allow me the opposite:
Why would you think they’re not going to plex their accounts when they can?