I have asked this question a few times, but now the Fifty Fifty question is real and it opens a new question which had to be asked.
Does KPop acts need Korea?
Obviously, in FF's case, it does not need Korea. The Attrakt owner is upset and is saying a bunch of things but his claims seem to be as weak as Prigozhin's lofty words after he was sent to Belarus.
He cannot do anything to FF if they choose not to promote in Korea, which they seem to be willing to. There is no Korean fandom for them, so losing Korea is just a trivial matter - Korea might be about the 30th most important country for them.
Most sales for KPop acts come from foreign fans anyways. The Korean concerts even for the major acts are mostly fan services for existing Korean fans, and are not their signature acts. In fact, the increasingly diminishing Korean fans should be thankful that the acts are still promoting in Korea, although that is increasingly becoming just a waste of time.
The concert at Chamshil by IU, someone who cannot sell an arena outside of Korea, sealed the fate of Kpop in there. Since nobody is likely to do a stadium concert there after her, any act who are famous in the overseas will not get the respect the domesticist gets at home. To get the respect of the Korean fans they have to outdo her.
In addition, the lower birthrate of Korea (incl even North Korea, whose parents are not too eager to produce future recruits for the fat ass there) means newer acts will probably have to include foreigners, and aim for foreign popularity. Korean popularity is not enough to sustain an act anymore, and since most events are now attended by older people who prefer trot, event-oriented acts don't really have a place in there anymore.
Korea has fewer fans who are willing to buy multiple copies of an act's album as well., let alone attend concerts.
I don't see all bad points in the FF circus. It will define the position of what Korea is as far as Kpop is concerned. If it can lead to a long overdue permanent separation of KPop from Korea, I don't see it to be all bad.