Market Power and Elasticity of Demand
Market power is the ability to raise price above marginal cost and earn a positive profit. The degree to which a firm can raise price above marginal cost depends on the shape of the demand curve at the profit maximizing output. That is, elasticity is the critical factor in determining market power. The relationship between market power and the price elasticity of demand (PED) can be summarized by the equation:
- P/MC = PED/(1 + PED)
Note that PED will be negative, so the ratio is always greater than one. The higher the P/MC ratio, the more market power the firm possesses. As PED increases in magnitude, the P/MC ratio approaches one, and market power approaches zero. The equation is derived from the monopolist pricing rule:
- (P - MC)/P = -1/PED
Read more about this topic: Market Power
Famous quotes containing the words market, power, elasticity and/or demand:
“Forbede us thing, and that desiren we;
Preesse on us faste, and thanne wol we flee.
With daunger oute we al oure chaffare:
Greet prees at market maketh dere ware,
And too greet chepe is holden at litel pris.”
—Geoffrey Chaucer (1340?–1400)
“We are expected to put the utmost energy, of every power that we have, into the service of our fellow men, never sparing ourselves, not condescending to think of what is going to happen to ourselves, but ready, if need be, to go to the utter length of self-sacrifice.”
—Woodrow Wilson (1856–1924)
“One of the reforms to be carried out during the incoming administration is a change in our monetary and banking laws, so as to secure greater elasticity in the forms of currency available for trade and to prevent the limitations of law from operating to increase the embarrassment of a financial panic.”
—William Howard Taft (1857–1930)
“Self-sacrifice usually contains an unspoken demand for payment.”
—Mason Cooley (b. 1927)