What you see as anticompetitive payment processing on iOS, others may see friendly and harmless business model. HNers, be respectful when criticizing bigger companies like John Deere and Apple - it's important you don't hurt these customer's feelings and scare them off.
Your tractor doesn't (I would hope) contain your banking details and all your emails, contacts, browsing history, photos, etc. It deserves to be treated as the tool that it is.
Apple taking your data privacy seriously seems a worthy exception to me. You're free to disagree, and buy an Android.
Apple can take my privacy seriously while also allowing me to fix my hardware. You are promoting a false dichotomy that could be used to excuse almost any form of irrational behavior.
