[dr1337]

Monopsony is also deemed to be anti-competitive and illegal. Technically as an app developer or service provider, when you're selling an app or service on iOS, you're not selling it directly to the user. You're actually selling it to Apple who then on-sells it to the user. Because of the way the walled-garden has been set-up, there's no alternative way of reaching customers unlike in Android where a customer can have the option of multiple app stores or the ability to just sideload the app.

[chrischen]

That's if you draw the bounds artificially on the iOS ecosystem, then yes. Apple is famous for creating an end-to-end experience, so if you consider the products as App store ecosystem and iOS device, then you are encroaching on their product experience that they are selling.

Not to mention Apple is charging the standard rate similar platforms are charging.