Basically its a calling for DEI in Kpop. They did that and failed many times. Racial diversity in Kpop is just not popular. Koreans dont care and neither do fans of Kpop.
The history of K-pop as internationally popular music is a history of looking at what music is popular internationally and emulating that, whether by hiring successful songwriters as advisors, or integrating lyrics in English, Japanese, Spanish, Chinese to target international audiences.
Of course it often doesn't work out, but the investors know that. They're basically VCs, funding lots of long bets and then cutting their losses when metrics aren't on target. That's why there are so many new bands that release a single album and then disappear. Fans of course don't like it, but for the companies it's a purely financial question.