Monopoly is less efficient than perfect competition.' To what extent to you agree/disagree with this statement?

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Anthony Philbin

Managerial Economics – Coursework 1

Monopoly is less efficient than perfect competition.’ To what extent to you agree/disagree with this statement?

Efficiency is a technical relationship between input and output. To be the technically efficient is when you produce maximum output with the minimum input. Another way of being efficient is being allocatively efficient. This is when a firm produces at the minimum point on its Average cost curve. Perfect competition is when there are a large amount of firms in the industry all producing the same homogenous good. In a monopoly there is only firm in the industry, and it is the sole supplier. This essay will look at the structure of the perfect competition and assess it efficiency. Then we will look at the structure of the monopoly and how efficient it is also. This essay will argue that on balance, perfect competition is more efficient then a monopoly.

A perfect competitive industry has certain characteristics. There are many buyers and sellers in the industry. There is perfect knowledge throughout the industry. All products are homogenous goods. There is free entry and costless entry into the industry. All firms in the industry are interested profit maximisation only normal profits will be able to be made in the long run. This is because, if there are supernormal profits being made in the short run, due to an increase in demand, new firms will be attracted by these profits. Due to perfect knowledge and free entry into the industry these new firms will enter, reducing each firm's individual demand until profits are at a normal level. Similarly if there is a fall in market demand, so all firm makes a loss, due to the costless exit, firms will leave due to costless exit, reducing each individuals firms loss until normal profit is reached. Each seller is a price taker. They believe that what they contribute is so small, that it does not affect overall market price. The greengrocer selling bananas for 25p per kilo believes that his actions do not affect the overall market price for bananas. If an individual seller tries to raise the price level of his quota of bananas to 26p per kilo, his total revenue will be zero. This is because the many consumers have the perfect knowledge to know that they can buy the homogenous bananas from another banana seller at 25p per kilo. The result of this is that each individual firm has a perfectly elastic demand curve. This means that the marginal revenue curve of the firm will be a straight horizontal line. For every extra unit of output sold the firm receives the same amount of marginal revenue. The average revenue curve will look the same. This is because that average revenue will be constant. If the firm receives the same amount for each extra unit, so on average the amount per unit will be constant. As said earlier the rational perfectly competitive firm will produce at the profit maximising level of output. This is the level of output where the MR curve is equal to the MC curve. As any output either side of this point would mean a firm could make more profit producing more where marginal revenue is greater than marginal cost, so production should increase. The firm would make lower profit by producing at a level where the marginal cost curve leads the marginal revenue curve. The above information can be shown on the diagram below.

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Price

        MC

        AC

        MR=AR=D

          P*

        Q*                Output

The diagram shows that the perfectly competitive firm is producing at output level Q* and price level P*. At This level the firm is allocatively efficient as it is producing at the minimum point on its AC curve. The firm is also being technically efficient as it maximising output, by producing where AR=AC, but is doing this by producing with minimum input cost, as it is producing at the output level where the MC curve is equal ...

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