But you’re still stuck with a collapsing ecosystem. $100 isn’t even close to the cost of testing an app in the App Store. The App Store doesn’t scale - you need humans inspecting the program and using it and they need a bit of time to do that. For decent testing you’ll pay $100/hr and it’ll take a few hours at least. I don’t know how you’d do an all-in customer-protecting test round of an app for less than $2000. Which means no more free apps. Or, you continue to subsidize free apps with income from non-free apps which means taking a cut of things like in-app purchases.

I’m not saying that 30% is the right number - it’s probably way too high (maybe?) - but if you want free apps, you can’t let anyone use their own payment processors because it’s a revenue hole and you literally won’t have any revenue that doesn’t go down it.