Spotify Korea was launched, but singers under KakaoM did NOT sign with it.
So Spotify Korea canNOT play songs from such artists.
I am sure KakaoM has a lot of fine artists, but it all comes down to a certain J. Lee.
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Although a certain J. Lee does NOT really promote outside of Korea, because of her control of Korean d-o-m-e-s-t-i-c market, she wields an inordinate amount of power compared to her nonexistence of influence outside of there, and her having sung only two Kpop songs in her entire career (and she did not sing the second one until last week).
This is a philosophical question -
Even an Emperor which rules the entire world is powerless against a local powerful, who might be powerless outsideof his (or, in this case, her) turf but is supreme within her sphere of influence. Only a massive intervention involving lots of resources might extract the local notable's power, and even after that the notable still has lots of ties in the turf and usually he (or, in this case, she) returns.
Because of her stranglehold in Korea, she is often seen in the same league with BTS, even though her international reach is significantly shorter.
And now Spotify Korea and Apple Music Korea are feeling her power.
It would be wiser for Spotify and Apple Music to NOT deal with her songs since KakaoM (read: J.Lee) is NOT giving its songs to Spotify Korea and Apple Music Korea, but the management of these companies still allow her songs to be played through their main server in USA.
So that will only embolden KakaoM and a certain J. Lee even further, which is unfortunate since they contribute significantly to Kpop still remaining domestic.