Naive Question: Are we running out of diskspace to store pdfs that detailed categories aren't wanted? Or is this a way to make it difficult for outsider to spot trends?

Unfortunately you need specialized hardware for triangle rasterization, and TPUs / Compute oriented GPUs cannot really do this efficiently.

Some gamedevs hoped Nanite would eliminate the need for rasterization hardware, but because it's only performant in certain scenarios (very high poly meshes) consumers are pushing back against this.

if china will do it im pretty sure US economy will take a big hit. it wont be super hilarious for a lot of the world for a while... (this will be worse inflation than 2008.)