Wartime production mobilization, public health (vaccine procurement, disease eradication), natural monopolies like power grids.
Public transport, water and sewage systems, infrastructure like roads and bridges are more of a hybrid model with a strong planning component, and private contractors (who consume a lot of public funds and often misuse them).
Public transport, water and sewage systems, infrastructure like roads and bridges are more of a hybrid model with a strong planning component, and private contractors (who consume a lot of public funds and often misuse them).