Would it be unkind to suggest that Samsung declines to sell this chip to a certain assembler of smart phones, tablets, etc, or at least charge that firm a significant premium ?...
If you are talking about apple, it could happen. But then anti competition laws and market manipulation watchdogs would become active. If apple orders 50 millions units of LPDDR3 then it should get a lower price per unit, compared to a company that only orders 1 million units.
But still the ipad air is only equipped with 1GB of ram which is insufficient nower days.