Porsche is famous all over
Porsche is famous all over the world, it's always special, even in my country (the Netherlands). South Korea has a very local wealthy economy, it's part of the world's chip industry (power, memory, and logic) and has plenty of rich people too.
Because you don't see Porsches on every corner of the street it doesn't mean they're not there. Porsche will sell fine, same as Ferrari and lamborghini. However, I am not sure about the charging network though.