They want a 27% commission on sales made from those links and the right to audit companies' accounts for compliance. https://twitter.com/dhh/status/1747406430054097099 It's beyond a joke. Between that and the payment processing fees, you're no better off. In fact, you get all of the same costs but none of the benefits of Apple's app store native payment infrastructure.
> Apple’s commission will be 27% on proceeds you earn from sales (“transactions“) to the user for digital goods or services on your website after a link out (i.e., they tap “Continue” on the system disclosure sheet), provided that the sale was initiated within seven days and the digital goods or services can be used in an app.
As any F2P gamer knows, “whales” don’t just spend up front - they make microtransactions on a regular basis for months or years as new rewards become available. This is incredibly meaningful for game publishers who depend on long-term customer engagement.