Originally Posted by Mr. Ed
since release I think I have sold maybe 2 64 gb iphone 5's
In the big picture most people don't need that much storage.
plus there is the whole cloud storage debate
Price is probably the reason, not the additional storage itself.
Yes, most people may not need it but read my comments above on App installation with additional Data to see small 16GB storage is not enough.
Cloud storage can not be relied upon.
1. Costs are still too expensive for continued Cloud usage.
2. Coverage is still not good enough. It is patchy and temperamental at best.