I have one box acting as a router, NAS, DVB-T receiver, NAS and the other box as HTPC. Both are based on desktop motherboards and I also run Kubernetes (kubeadm

I have one box acting as a router, NAS, DVB-T receiver, NAS and the other box as HTPC. Both are based on desktop motherboards and I also run Kubernetes (kubeadm) on them, with more CPU-intensive tasks assigned to non-HTPC so it doesn't interrupt movie playback. But yes, I think it is not common, it takes time to set up and maintain.