[wbkang]

It's still a valid point. Is it ok to take 15% more if you make more money? Does the marginal cost of supporting an app _increase_ as opposed to stay the same or decrease?

[Terretta]

Depends on the app, but for some apps, the more users, the more your cost per user increases, because of the type of user in each cohort.

Early adopters tend to explore and self-support more. Late majority need more TLC.

[hamandcheese]

Those costs would not be borne by Apple, though.

[Terretta]

On the contrary, these users ask Apple for support for all manner of not-Apple app things.

[hamandcheese]

Even my very tech illiterate mother knows the difference between a 3rd party app she downloaded and first party Apple apps.

Even still, people might ask Apple for support, but I highly doubt they receive any support beyond a generic message informing them to contact the app developer.