It feels like in order to have this conversation intelligently, we all need to me on the same page about how royalties work, and the difference in royalty types (at least mechanical vs performance royalties).
Here's how it was when I studied this 15 years ago.
In a traditional big four record contract, the artist (which for a band like Korn is five people), the record label gets 92% and the artist gets 8% (to split between them), but that's only on domestic (US) sales. On international sales the split is worse at 96%/4%. The artist would typically also pay for any damaged product, which mattered more in the case of shellac records as they are more brittle and broke more often.
For a publishing contract there's more variance in the split but it would typically be more like 60/40.