It's a real thing. Currently there is a Flash NAND shortage due to the high and popular demand and usage for both SmartPhones and SSDs. This will effect two things, prices and some units of the lesse... Samsung 850 Pro 4 TB Delayed Due to NAND Shortage
With the old 850 pro, you have the choice of building a whole decent computer with a normal sized SSD, or get just get a 4 TB SSD. If the prices remain similar, it's very much a niche product. Maybe more people are buying them than we realise?
Wouldn't mind one of these. I currently have 3 SSD's and no HDD, in total I only have 1TB of space, so space is always an issue especially with the size of games now. Thankfully with my broadband speed it's not too bad, but not ideal.
It is not the problem of not enough factories, Samsung has more than enough NAND factories. The reason for this move by Samsung is because they will wait for the SSD prices to go up and to make bigger profit from their own pending 850 Pro 4 TB ssd's.
Its a consolidation by memory/storage companies. They are de-commoditizing the prices by taking production offline. WD buys Sandisk who bought Fusion IO. Micron in talks to be purchased by Tsinghua. Plus all spinning drive manufacturers(WD/Seagate) are cutting back taking extra production off market there also.