If it's to prevent money laundering then just a nonsense idea. If all the exchanges walk this way, then decentralized exchange volumes will be higher.
It wasn't even meant to prevent money laundering, just a stupid useless tool that basically does nothing.
After you go beyond their first page of PR when they quote money laundering and FACTA regulation you get to the point where:
But they still allow cash withdrawals there, right? So the entire "illegal activities" argument doesn't hold.
Didn't South Korea have one of the highest Bitcoin adoption rates in the world? Call me paranoid, but could it be they're protecting other financial interests trying to discourage the use of Bitcoin?
You can't withdraw cash unless you do it to a bank account that has been also whitelisted, and after their regulations, all accounts enlisted are checked by the FIU.
So you can't basically withdraw either fiat or crypto to an account that is not already KYC and has your name on it.
As for the usage, I'm always skeptical about those 10-20% numbers, assuming we have 100 million users in India and zero protest about their laws or 20 million in Nigeria and zero protest when the banking ban was put in place makes me think the numbers are highly inflated. But in the case of South Korea probably the pill was far easier to swallow, their capital control rules are probably the toughest in the world, and poeple are used to, you simply can't get money out of SK, that's why coins always have a premium there as it's costly for them to acquire from foreigners since those can't get their money out of there and in their bank account.