bakit bihira/never magcollab sa mga tiktok yung bini with other ppop ggs?

i noticed na very open naman yung other ppop ggs to do tiktoks or even do the dc ng ibang ppop ggs pero pag dating sa bini, parang bihira makita sila with other ppop ggs?

recently nagppost sila tiktoks pero with bgs (vxon and ajaa) ng CS pero parang sila sila lang before din? vxon din yung kacollab nila dati.