Understanding the reasons does not meant defending them, as I said in my first post:
Prices will eventually drop again, in the meantime both my desktop and laptop each have 16GB of DDR3. If I was buying now, I'd probably get as little as I can get away with (16GB). But that surely hurts all the other hardware companies as I'd probably consider an 8 core Ryzen and it seems silly to have only 16GB on that. So I'll probably put that whole purchase off. So no sales for the mobo makers, AMD, plus I'd probably have bought some NVMe drive too and possible a graphic card.
So not good for the whole tech industry, but none of that means I cannot see why the remaining* DRAM are so keen to not kill their golden goose and are happy raking it in atm.
*And the fact that there are really only three remaining should tell us something about the viability of the business. Very, very high capex, fabs whose lead time is 2+years, and often major losses. Even at the current vastly inflated Samsung's current (well they were current for in 2017) profits are far lower than the likes of Nvidia (64.48%), Intel (60.57%) or Qualcomm (55.51%). And these are gross figures from which both Samsung and Intel have to still build their fabs etc. and Samsung is on a building spree
Actually, those margins vs previous years aren't that much bigger. Makes we wonder if some middlemen aren't raking it in too and like with mining only the chip manufacturer is getting the whole blame?
As for the new Chinese players, while the Chinese government does have huge pockets (although China is now one of the most indebted countries in the world) it isn't actually that easy to break into the market in terms of leading edge tech. And while there is a market for slower, older and more power hungry parts I doubt that stuff will be any good for enthusiast for a long while. There is a very good reason why those Samsung B-dies go for a premium, and even in the OEM market a 2-4 cheap chips vs 1 more expensive chip might not even be a consideration in mobile, phones and other markets.