Karadjgne :
Makes perfect sense. My father-in-law bought 2x 540Gb hdds back when they first came out and the biggest there was prior was a 420Gb. Cost him close to $1k, but he was tickled that he was the first to get 1Tb out of anyone he knew. Couple years later 1Tb are still over $100, some getting to $200. Now comes the SSD. 1Tb hdd is less than $50. Current prices on SSDs will remain somewhat the same for a good while, until someone develops a new way of storage, which will drop demand, and therefore prices, same as happened to the hdd. What you assume is that supply will go up from where it is now, that's doubtful as long as companies can still gouge the market within reason.
No, it does not make sense.
First off, you are talking about a 1TB HDD which is already so cheap that it's hard to drop the price due to the mechanical components, however the PRICE PER GB has dropped on larger hard drive capacities.
Your assumption that SSD's have hit their lowest price per GB is just wrong based on everything I know about modern engineering.
Do you really think a 2TB SSD will remain about $700USD and not drop in price?
What type of HARDWARE do you think would replace an SSD anyway?
Transistor-based memory is what we use for cameras, system memory, video memory, SSD's and so on. We have Intel OPTANE that is a very interesting technology based on phase-change memory but it's not going to provide a cheaper solution anytime soon.
SSD's mainly comprise a controller, memory, and a cheap plastic case. Prices have remained higher than expected due to SHORTAGES in memory, however in 2018/19 we can expect SSD prices to start dropping again.
Die shrinks and improvements in fabrication node process, and competition will absolutely 100% guarantee SSD prices will continue to drop in price for many YEARS to come.