Moore's Law- PCM memory

When Phase Change Memory was in its development and infant stage, the biggest challenge that many developers faced was the production cost of PCM memory. Enterprise Storage Forum, indicated that in 2010, the cost to produce a PCM memory chip was approximately two times the cost than that of established memory chips like flash. The reason for this was "Due to poor economies of scale" and lack of research and development.

http://home.fnal.gov/~carrigan/pillars/Moores_law.png

 If we take into account of Moore's law, in which the price of transistors reduce by half every 20 months (approximately 2 years). Thereby, as of today, the cost to produce theoretically should have reduced by half.  However, this same concept applies to the established memory chips such as flash.

Hence, the reason companies such as IBM develop PCM memory chips, is not for the purpose that it is economically cheaper to produce than flash memory, rather it for the purpose that PCM memory is supposedly more efficient and effective than Flash.

Web links:
Enterprise Storage Forum