Looking at the Problem of Responsibility and Alignment
This is how changing the light bulb situation would pan out at a large corporation.
The business, or the Product Owner, would come and say that it was made clear that a light bulb in the living room had burned out. They engage a Solution Architect, who will suggest that the light bulb should be replaced, the BA would validate the voltage and size of the bulb, and the Infrastructure Architect would say that we need to turn off the power before attempting this operation.