The reporter for the Korean times told me it was likely it was happening.
Money laundering is illegal.
By knowing how the store works, it becomes obvious that it is trivial to launder money through the NCSoft stores.
Here is how money laundering would take place.
Real money, for the purposes of this explanation, will be called "money." The ingame currency bought with real money, for the purposes of this explanation, will be called "points," although each NCSoft game has a different name for it.
F2P account is created. F2P account buys, with money, a large number of points, with a prepaid debit card. At this point only the store knows what account the points were purchased by and what game they were purchased in.
Store passes NCSoft its share. At this point, only the store knows what game the points were purchased in, although NCSoft knows what account they were purchased by.
F2P account is canceled.
Points are canceled without refund, leaving no record of what game they were purchased in.
Account is canceled and cleared by NCSoft (as we saw when accounts were canceled during the shutdown) leaving no record of what was purchased in the in-game store.
NCSoft and the store now have the money, with no record of where it came from or from whom.
Money is now laundered. The game in which the points were purchased has gotten no credit for the purchase.