BTS' forced military service will probably make a lot of companies change their focuses.
I have advocated KPop saying goodbye to K-O-R-E-A for quite a while, and it is likely that companies will develop more local acts in other countries in KPop style, never letting them set foot in Korea again and if they see any trainees like GDragon who might have talents, they will move such talents away from Korea before debut, get a citizenship or so from another country, and will operate them as someone belonging to another country.
With Korea's declining populatRhion, it is no longer viable to use Korea as a base. These acts might visit Korea to get training and so but they can choose to debut in some other country and keep out of Korea's hand.
The K-O-R-E-A-N men brought this to themselves. There will be KPop idols in the future, but they won't be 'Korean' anymore. (Female idols are another issue, but most of the bigger girl groups depend on foreign members anyways. Gidle already has a foreign majority. That will be the trend.)
If Korea treats KPop acts like shit, companies will vote with their feet. In time there will be 'KPop' idols who never really saw K-O-R-E-A but that has to be accepted.