The DRAM companies would be building more if they could.
You can't sanction your way into squeezing blood from a stone.
> If enterprises and consumers alike are forced to spend substantially more on DRAM, they won't be able to spend on other things and the whole economy will slow down.
If a country came along and declared that companies couldn't buy the resources they need from other companies, the second order effect would be every major company relocating their headquarters out of that country as soon as possible, along with a sharp decrease in startups being formed in that country.
The economic impacts of this level of command-and-control government would be devastating to the economy. Much more than having to spend a few hundred dollars more on a laptop every 5-10 years.