All of that can easily be funded by the margins Apple makes off device sales alone combined with the fees you pay to become a developer. Even if for some reaso

All of that can easily be funded by the margins Apple makes off device sales alone combined with the fees you pay to become a developer. Even if for some reason you believe that's not true, there's no way they need 27% of all purchase revenue on the store to fund that stuff. The numbers simply don't check out. 30% was an arbitrary cut and that's why they can easily drop it to 27% or (for small devs as of recently) 15%. In the situations we're discussing, both the app developer and every customer have already given apple hundreds if not thousands of dollars worth of revenue. Out of that, Apple has a healthy margin. Now we're talking about Apple sticking their fingers into developers' pockets for every single transaction even if Apple's participation in that transaction is limited to updating a couple database rows to indicate that Customer XXXXX bought DLC Package YYYY in App ZZZZZ. There is simply no way that is worth 30%. They're not doing that much work.