It's a typical boom-bust issue. Lower prices drive up demand, which in turn results in undersupply.
The fall in NAND flash prices has been accelerating the adoption of SSDs among PCs, the sources noted. ODMs have moved to promote models equipped with PCIe NVMe SSDs with volume production of their new devices slated to kick off in the third quarter, the sources said. Client SSDs are expected to transition from SATA to PCIe NVMe in 2018.Via: DigiTimes
SSD prices had fallen about 50% from November 2017 to the end of the first quarter, Phison Electronics chairman Khein Seng Pua remarked recently. Prices are likely to rebound before or after the Computex 2018 trade show, and the supply of NAND flash will become tight again, according to Pua.