They're not used everywhere, most stuff desktop or servers are now based on SSD or equivalent. Your use case of people running desktop with 100TB is niche, for

They're not used everywhere, most stuff desktop or servers are now based on SSD or equivalent. Your use case of people running desktop with 100TB is niche, for $100 you can get a very fast 1TB nvme drive now days, which is fine for 99.99% of the population.