For a Sea country that are behind Indonesia, Thailand and Philippines in streaming merch buying

They went from 0 to 3 Kpop idols under one year in 4th gen. Hanbin, Anh and now Hannie. It's amazing and I wonder if Korea now sees Vietnam as a hidden gem because it's cultural similarities with East asian cultures and it's potential?

Hanni isn't exactly just targeting Vietnam. She's an Australian, fluent in English so her value is more than just appealing to SEA fans.

The other two aren't from Big 4 so I can't really speak about their influence...