Let me try a WhyKnock style piece.
During many points in Korean history, the court will be divided between factions, one of which will support a 'foreign' entity - China or Japan having dominating influence, where Korea caters to that suzerain and another faction which will insist on Korean autonomy/autochthony etc.
When the conflict escalates, it ends up in an invasion or overthrow of the dynasty etc.
Seems Kpop is heading that way, should it cater to international fans and if so, at what extent that it starts ignoring Korean audience etc.
Like with politics, where Korean rarely was not dependent on a larger power, can Kpop not sustain without the Western market.
It definitely makes more money by being successful in the West, but the problem with invading/conquering dominant cultures/markets, is that they tend to assimilate the conqueror as a part of that culture and the original culture is marginalized into museums and footnotes.
For example: The BTS meal would have been a victory for Korean culture, if say Kimchi was a part of it in 50 countries.
But turned out BTS was needed only got packaging and promotion, otherwise the content was still Western.
Will history repeat with Kpop and if so, which way?
Can Kpop retain its distinctiveness while still expanding into the West.
Or will catering to West dilute it, cause split up into factions like in the old kingdoms into
HanguKpop and EnguKpop?