> you are build for their OS, using their APIs and SDKs
Already paid by the user. You are building for the user. Do you pay the house builder for the poster you nail in your wall?
I only get that argument for the actual store, since there is a curation service being provided. But the OS? No way. If anything, apps in an OS ecosystem give more value to the OS; the OS owner should be paying for that ecosystem, not demanding payment.
Right! So as soon as I’ve bought one game built with Unreal Engine, I’ve paid for the engine and should get a discount on all other games which use it.
I’m the customer. I can decide when the company is fairly compensated.
Well, you probably would pay the house builder for the poster you nail in your wall if the house builder stored and delivered the poster that was built with tools the house builder provided. Your analogy does not apply.
For your second point, apps vary in value and I'm sure that there are times when Apple pays somebody to put an app on their store.
Already paid by the user. You are building for the user. Do you pay the house builder for the poster you nail in your wall?
I only get that argument for the actual store, since there is a curation service being provided. But the OS? No way. If anything, apps in an OS ecosystem give more value to the OS; the OS owner should be paying for that ecosystem, not demanding payment.