Good question. Can’t eliminate the BIOS/UEFI on commodity systems. Can’t remove/cut down the BMC. Can’t plumb the hardware root of trust into the OS and VMs. Can’t do dynamic rack-level power capping (future roadmap). There’s a whole bunch of the software stack that only works because the hardware and software were designed together.

Oxide exists in part because commodity systems don’t work for building a cloud at scale (Joyent). Similarly, AWS, GCP, and Azure don’t use commodity systems, they use hardware that was designed to work together with their software, Nitro being a prime example.