The whole BTS military service issue would have been moot if Korea became a minor league of KPop and few successful acts ever returned Korea, preferring to stay in the bigger markets like Japan, China and elsewhere.
Famous soccer players hail from Brazil, Argentine and Africa, but few of them stay in their home leagues. They prefer to go to leagues in Europe, most favorably in the Premier League of England.
There are many famous baseball players hailing from Dominican Republic, Puerto Rico, Mexico, etc but few people pay attention to the Dominican league, Puertorican league, and Mexican leagues. Their star players , once in the Major Leagues, stay in there as long as possible and few of them return until their career have almost ended and they need the pocket changes from these leagues.
Korea is a net loss as far as concerts are involved . In the recent 10 years, only 2 acts , BTS and EXO, had concerts in the only major venue in Korea, the Olympic Stadium , and other than them only IU, a domestic singer who NEVER even filled an arena outside of K-O-R-E-A, attempted to have a concert there.
As seen by the opposition of K-O-R-E-A-N men about granting BTS the military exemption, generally the K-O-R-E-A-N-S do not like KPop.
I personally think it would have been better for the companies to shun the K-O-R-E-A-N market, which is actually quite tiny and getting smaller as the birthrates decline, and concentrate on foreign markets, leaving K-O-R-E-A for the rookies, trottists and balladists, and that way foreign fans would have paid little attention to the K-O-R-E-A-N music market like few people paying attention to the Brazilian, Argentinian or African soccer leagues.
I personally have thought that KPop does NOT deserve K-O-R-E-A, whose people have a long way to go before appreciating Kpop.
Making Korea irrelevant for KPop would have been a major move which would have benefitted Kpope in the long run, since which means Kpop would have made it immune to whatever comings and goings in K-O-R-E-A where they did not expect to earn too much money.