Can you elaborate on this comment in terms of how no de-duplication is in any way expensive to Apple? People have to pay for their cloud storage generally (past 5GB) and Apple presumably has their price structure setup in a way where it is either profitable or at least only negligibly costs them as a loss leader for its expensive products.

If someone has all kinds of duplicates, so what? Eventually, they have to pay and up their subscription price for the additional cloud storage. The only way de-duplicating could possibly save money is if two or more people with the same file are both pointed to that same file in a location that is not within their account.

I don't buy this de-duplication argument.