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One reason is the general public interest, frequently this is in relationship to a natural monopoly. For example, how many sets of electric lines should be allowed to be strung all over town? If 10 competitors were all allowed to string their own lines, the city would be covered with wires and littered with poles.

The other reason such laws exist and are enforced is that some people want to limit others from competing with them. They have the money and political clout to get these laws passed. They set up "professional standards" that they make new entrants pass. They require long periods of employment in the industry before a person is allowed to set themselves up as competitors. The political rational usually given is "We need to protect the public from unqualified individuals" but the fact is that they want to protect their business from competitive pressures and have the resources to make it so.

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13y ago

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