It's funny to read that Hayek compared parts of the economy to organs. I often use analogy of money being blood in human body, to illustrate that from the perspective of each individual cell, blood is a resource, but from the perspective of the whole body, blood is just a transport medium of which it can create any amount required.
And accordingly, body can decide to vasoconstrict (shut down) certain organs in times of crisis. It is a collective decision, not a decision of an individual cell.
So of course, you can shut down parts of the economy. You can also put those people in parts that shut down on a kind of helicopter money support. All those things have always been possible, it's just people were conditioned to think they are not.