Indeed, the money should flow from app stores to developers and not the other way around
Developers provide value to their platforms. Developers don't need them except for the fact that they enforce a monopoly on distribution (iOS)
The day is coming when platforms will have to reward content creators based on usage metrics or simply up front. Platform subscriptions, micro payments, or platform ads are the future. And they will only get cheaper as time goes on
A ruling forcing Apple to open up iOS to different browsers or app stores will be the sign that change is coming