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There's an industry shortage of DRAM too. Apple might as well get a bundle deal on both NAND and DRAM from Samsung which are top notch in the industry.
 
It would be nice if they phase out 32GB. 64GB should be the minimum with all models.

Wrong. And your theory contradicts itself. If Apple phases out 32 GB of storage, then that increases the price of the phone as it has before in the past. And not everybody needs 64 GB of storage. Providing variable options to the consumer allows for cheaper entry-level price points and not being restricted To a storage tier NOT everyone needs.
 
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