Banks and loan are not a good comparison since you ll most likely understand a million euros loan will be harder to produce for the bank than a 1000 one. Taking a percent is fine.
Tbh it would be fine if Apple charged per bandwidth usage. But taking 50 or 500 euros in wont change how much it cost them to deliver the app.
That was entirely my point. I was responding to a comment that says we have precedent in accepting % revenue models because Visa has one. I'm pointing out to them that in finance, percentage of dollar amount is normal and orthogonal to the App Store model.
Tbh it would be fine if Apple charged per bandwidth usage. But taking 50 or 500 euros in wont change how much it cost them to deliver the app.