Earlier quoted context omitted.
Every app is based on features of IOS implemented in a way that Apple has not done yet.
If you want to look at it as a dichotomy, sure, but can't we agree that there's a continuum here? Syncing is certainly a "core" feature. Can anyone be surprised when Apple protects this as something they want to implement? I think that as an app developer, you have to consider this continuum when you set out to develop an app. Many "utility" apps would be considered closer to the core. Apps like a medical x-ray viewe…
More relevant to this case, is that Apple rejected an app that (based on the evidence presented) met every knowable requirement for being included in the app store and which had a high probability of generating substantial revenue. Then Apple appropriated the name and icon.
All this makes it hard to consider Apple's actions in this matter to be ethical in any meaningful sense of the term.