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List the names of the some companies that are in monopoly business. Explain whether a monopoly could increase its revenue and its profits by charging different prices to different groups of customers. Give a numerical example to illustrate your point OTHER THAN SENIOR DISCOUNTS.

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Public utilities are often strongly regulated or publicly owned. AT&T and Standard Oil are debatable examples of the breakup of a private monopoly. When AT&T was broken up MCI, Sprint, and other companies were able to compete effectively in the long distance phone market and began to take phone traffic from the less efficient AT&T.

Price discrimination exists when sales of identical goods or services are ...

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