What do you mean by lack of due process and timeliness? It took five years and multiple consultations to reach the verdict.What's your point? It's also not uncommon to limit outside payments in vendors' property use agreements. (To turn your phrase, I'm left wondering if some people are aware of business outside of Apple.)
To be clear, I agree in principle with the EU eliminating anti steering agreements. I do disagree with their implementation because of a lack of due process, timeliness, or evidence of harm. (As well as the strange trend of certain rules that target Apple to the benefit of market leaders.)
It certainly seems like nothing more than a shakedown when Apple has already announced changes as required by the DMA.