I don't challenge at all that there is a valid complaint to be had with Apple, but a.) it is also not that easy as you indicate and b.) I stand by the assertion

I don't challenge at all that there is a valid complaint to be had with Apple, but a.) it is also not that easy as you indicate and b.) I stand by the assertion that @dhh picked that fight over the money nothing else. First, why should Apple not ask that you can purchase a SaaS subscription also through the store? If they didn't take any money or just 2% credit card fees that would be awesome, right? It would be great not having to disclose creditcard details on the app developers homepage. Why should SaaS be exempt? What is the difference between a mobile game with a multi-user server and Hey.com? Why should one pay 30% and the other not? The reality is that all custom rules and minutiae that Apple put up do exactely match their relative market power: Business apps, Spotify, Netflix, Gmail are all areas where they would risk loosing a lot of customers. Last, what is the alternative? Declaring the app store a public utility or restrict the fee that Apple can take? Is there any historic precedent for this?