How do they split royalties with that many people? I feel like 9 members would drastically reduce each individual's pay
Groups like SNSD, the biggest girl group in the world, don't have that problem as they have concerts in 55,000 capacity domes and are just massive in general.
The less-popular big groups make money from tv/festival/concert appearances and they individually, or as a group, are sponsored by massive corporations to sponsor their products.