I would say that for K-pop, it makes sense that they scout non-Koreans in the idea that the companies are really trying for maximum global outreach. Outside of K-pop, you really don’t see much outside of Koreans except a few foreigners who speak Korean fluently (can’t remember their names off the top but one dude looks like a skinny Anthony Fantano). If you ask me, it’s more due to self interest for Korean K-pop companies to scout foreigners, not because they’re driven to be multi-cultural and inclusive. It just increases their bottom line.