Which of the following is less likely to be a rare source of cost advantage?

Name: Which of the following is less likely to be a rare source of cost advantage?
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Question

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Policy choices are less likely to be a rare source of cost advantage as they can be imitated or replicated by competitors. Technological software, learning-curve advantages, and differential low-cost access to productive inputs are all examples of rare sources of cost advantage.

Which of the Following Is Less Likely to Be a Rare