There's a clip where Steve Jobs talks about how Xerox became run by salesman. The current Apple is not quite there yet, but it's very slowly heading in that direction.
Phil Schiller previously had suggested [1] Apple should lower their cut once the App Store is bringing in $1b of profit a year. That feels pretty reasonable to me, but they're clearly addicted to the huge cashflows that come from taking 30%, and I feel like they'd raise it if the market would bear it. After all, their products and services keep getting better...
1: https://www.theverge.com/2021/5/4/22418828/apple-app-store-c...