back in my first days as kpop fan in 2016
I knew every group from SM, YG or JYP
And most of times never heard of any popular group in Korea outside Big3, such as Girls Day, Apink, Infinite, Beast, T-ARA...
Only learned about them after dig into kpop
I guess that's because companies only focused their promotions on east asia, hence for SEA fans and western fans kpop was essentially what other kpop fans translate to us lol
In this sense, Big3 groups used to steal most of attention of iFans while big groups in Korea sometimes were kept unnocited outside Korea even for markets very close to Korea such as China or Japan.
In Korea kpop is (or was) mainstream enough to any group have TV, Awards, Festival or Radio appearances, hence they could be promoted even if not in the same therms as Big3 groups. Meanwhile outside Korea it was kinda like... they just never existed
Just a random thought
What you think