How far back are we talking? Historically there were just a few computers in the world, personal computing revolution happened much later. And a private inferen

How far back are we talking? Historically there were just a few computers in the world, personal computing revolution happened much later. And a private inference rig costs roughly the same in 2026 as a personal computer did in the early 80's, if you want the performance comparable with a personal workstation of that time (vs a mainframe/supercomputer).