(c) Public interest. Governments once believed the public interest was best served if the state ran certain services.(d) Economies of scale. Costs can be spread if everything is centralised.(e) Cheaper finance. Taxes or borrowing backed by government guarantees might be cheaper than borrowing at commercial rates.(f) Efficiency. The public sector is sometimes more efficient than the private sector. The UK's National Health Service, despite its well publicised problems, has lower administration costs and serves more of the population than the private sector does in the US.
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