What is the intent of SK's policy?
Based on the article that is linked above, its origin seems to come from laws preventing map/navigational data being exported due to national security (South Korea is technically still at war with North Korea, as the Korean War only ended with an armistice/cease-fire). The article then states how the non-Korean perspective may view this as South Korea utilizing these laws to push a protectionist policy, helping South Korean tech companies to compete with big tech.
I'm sorry if this comes off as nit-picky as it is not my intention, but comparing the mapping services requirements of China and SK are worlds apart. The intent of each policy is important to think about.