was there also any change related to Apple wanting a cut of anything sold through an app, and how the Amazon shopping app works on iOS, and could that also affect 3rd parties?
No, physical goods have always been excluded from Apple’s commission
In fact they explicitly prohibit using in-app purchases for physical goods, presumably because they don’t want to deal with the headache that comes with providing customer support for those transactions.
In fact they explicitly prohibit using in-app purchases for physical goods, presumably because they don’t want to deal with the headache that comes with providing customer support for those transactions.