This was my thinking. CAD and 3D modelling stuff, rendering, real-time physics simulation, maybe some specific types of AI (probably not very good for ML stuff - most of that targets GPUs), they're workhorses for sure. They're just not real cost efficient except for a pretty small subset of people with lots of massively parallelizable workloads they're constantly running. Someone built a crazy one and posted pics to Reddit awhile back. I think that behemoth sported 2xthreadrippers and something like 1 TB of RAM. People pressed him for wtf he did with that thing. He designs/prints custom anime waifu pillows. P.S. do not get if you want to game - they can totally do it, but as you can imagine, this is not a setup developers test or care about if it does not work