You think uploading to the App Store counts as “marketing”?
I will say that there is value in Apple having aggregated the best customers in the world by virtue of the iphone (defined as users with a higher propensity to spend). This means that 70% of iOS app revenue will still be higher than 100% of android app revenue (and possibly any other platform as well).
Not forgetting that subscription and app revenue increases to 85% in the second year for select groups of developers.
I feel the App Store is also a powerful levelling tool for developers, especially newer ones who may not have the resources to compete with more established companies. Everyone has access to the same APIs and the same App Store infrastructure.
In addition, because it is harder is to sideload apps on iOS, app piracy is way lower compared to android, which in turn increases the number of users who actually pay for apps. So again, more money for developers of paid apps.
There’s also iTunes (which is itself tied to Touch ID and Face ID), all my subscriptions are consolidated in one page for easier tracking and management, Apple forcing developers to support features like sign-in-with-Apple and ATT will only benefit me in terms of more options, and I like that Apple is also experimenting with ways to let developers advertise to consumers while also protecting our privacy.
All these come together to create a better user experience, which in turn leads me to purchase more apps from the iOS App Store because of how frictionless the whole process is.
We can debate until the cows come home about what a fair cut should be. If not 30%, then should it be 15% or 10% or 5% or even waived altogether? But I think we can agree that Apple has invested a lot more in their App Store compared to android or even the Microsoft App Store, and are doing a lot more to tend to it.
As such, I feel that any conversation regarding the burning down of the current App Store model needs to take into account the overall bigger picture. It’s a lot more nuanced than “30% bad, let’s scrap it”.