If you zoom out to the year 2100, it becomes a little pimple on the economy that is ready to pop, but in the here and now it can cause a lot of damage to real people's wages and finances over the next 3 years.
The funniest comment here. Have you seen the prices of the technical shit for the past two years? Dang, GPUs are not getting any cheaper, but more expensive with each year.
Also, DRAM fabs are not really usable to make compute (CPU, GPU, etc in this context) silicon. The production lines and tech have diverged some decades ago. So unlike TSMC which can relatively easily retool for another customer, no such luck for the big DRAM manufacturers.
There are a few different variation, such as having a carrier chip below (as an interconnect), having a small PCB that everything is mounted to, or even vertically stacking chips (AMD's 3D v-cache does this on some of their CPU models).