You mean outside of the physical coercion, eh? That seems like a big difference in my head.
If I petition the city to have my neighbor trim back his tree, it is one thing. If I beat him and threaten his family as an encouragement to trim the tree and give me $20, it is another thing altogether.
Actions can be mafia even without physical violence.
As everyone can see the notice was sent by Apple itself not by an US institution like a tribunal or a governmental agency.
Even juridical acts can be a form of violence expecially if they came from a big organization against a small retailer. The fact that there is no physical violence put them in another plan but violence and intimidations are always of the same nature and qualifies this act as mafia (in my point of view).
If I petition the city to have my neighbor trim back his tree, it is one thing. If I beat him and threaten his family as an encouragement to trim the tree and give me $20, it is another thing altogether.