Considering that most of biggest profits comes from idols using their faces, being brand ‘ambassadors’, CFs, photo shoots, acting.
You may be asking, “wHaT aBoUt aLbUm SALeS”. Millions are being sold for fan signs or video calls to WATCH THEIR FACES. Or for bragging about achievements, looking at the photo books, or have them as displays. In comparison, very few are actually buying albums to listen to the CDs.
Kpop should be considered a visual entertainment medium, with music as a sub-component, similar to what Disney does.
When record sales comes from a few seconds of an idol’s face and zero seconds from their vocals, it pretty much confirms it.