ECO101H1 Lecture 17: Lecture 17-Economic Profit of Monopolist
Tuesday, November 17th, 2009.
Economic Profit of Monopolist
P > ATC Æ Profit
P = ATC Æ Zero Profit
P < ATC Æ Loss
At Qm, P > ATC => Economic Profits
Digression
0DUNHW66 VXPRIILUPV¶VVVFKHGXOHV
VXPRIILUPV¶PFVFKHGXOHV
= MC for industry as a whole
= MC of monopolist
Pm
DD
Qm
MC
MR
ATC
Economic
profit earned
by monopolist
SS
Q
P
DD
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CONTRIVED SCARCITY: A competitive Industry is Monopolized
Results: RXWSXWLVUHGXFHGµFRQWULYHGVFDUFLW\´
(2) price increases
A Perfectly Competitive Industry is Monopolized
Government Policy Towards New Drugs
Objective: 1) Encourage research and development
2) Protect consumers from monopoly prices
Policy: Grant patent protection (monopoly), but for limited period of time.
Period of Patent Protection: Consumers Pay Monopoly Price (PM)
PM
DD
QM
QC
MR
PC
SS = MC
PM
DD
QM
QC
PC
MC [=SS in Perfect Competition]
MR
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ECO101H1 Full Course Notes
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Document Summary
At qm, p > atc => economic profits. Objective: encourage research and development, protect consumers from monopoly prices. Grant patent protection (monopoly), but for limited period of time. Period of patent protection: consumers pay monopoly price (pm) After patent expires: legal barrier to entry is eliminated and consumers pay. Firm sells same product to different customers at different prices. Let mc = atc = to produce a widget. Alternative strategies for firm: (1) p = 20 profits: 1,000 * (20 1) = 19,000 (2) p = 5 profits: 1,000 * (5 1) = 4,000. 24,000 (3) p = 20 for a customers. Profits: 1,000 * (20 1) = 19,000. Price discrimination (2) hard cover / paperback books. If monopolist can, will charge high price to customers with low price elasticity of demand, and conversely www. notesolution. com. Low price elasticity: charge high price (airline: business travelers) High price elasticity: charge low price (airline: weekend travelers)