You need out of band remote management, basically a separate computer on the side that can do things to the main computer, or a read only OS with networking and

You need out of band remote management, basically a separate computer on the side that can do things to the main computer, or a read only OS with networking and management abilities that things fall back to. It’s definitely a thing in the datacenter world, and there are examples of cloud stuff. MDM solutions come to mind for mobile, and MacOS can do that too in a limited fashion.