its more of a cultural differences and barriers thing, along with the insanely expensive costs of doing collab, licensing, permissions, etc. Western greedcorps want something reliable, even if its fakenews shits like CNN, at least a good number of fucking normies will watch it. Meanwhile, the awakened cultured folks are a niche demographic, albeit a growing one, but not a lot of faith there in terms of hard numbers and more importantly, advertising and exposure ROI.
Also, keep in mind, these corpos also tend to bwe the walking braindead wokers or the moralfag types, so they prefer that the 'idols' showcasing for any collab be soulless, zero personality puppets on a string marionetted for the amusement of brainless sheeple.