I find this argument kind of ridiculous - yes, access to Apple's APIs does bring value to its app developers, but crucially, the app developers increase the value proposition of Apple's product by being available on the platform.
It would be just as fair in this case to say that Apple should be paying Spotify for making their app available on the App Store.
Luckily, by custom there is another solution - the platform providers charge nothing and let their customers decide what software to use, and the developers targeting the platform do not charge for developing their software for the platform. As it has worked forever on Windows, Linux, Android, MacOS, etc.
It would be just as fair in this case to say that Apple should be paying Spotify for making their app available on the App Store.
Luckily, by custom there is another solution - the platform providers charge nothing and let their customers decide what software to use, and the developers targeting the platform do not charge for developing their software for the platform. As it has worked forever on Windows, Linux, Android, MacOS, etc.