A Comparison of Market Structures


by Krish Beachoo on Jan 18, 2024

Image: https://unsplash.com/@anniespratt
Edu Level: Unit1


Characteristics

Characteristics Perfect Competition Monopoly Monopolistic Competition Oligopoly
Type of Good Homogenous/Identical Unique Differentiated Idental OR Differentiated
Number of Buyers Many Many Many Many
Number of Sellers Many One Many Few Large Firms
Entry & Exit Freedom of Entry & Exit Entry is Restricted Freedom of Entry & Exit Entry is Restricted
Knowledge of Market Perfect Knwoledge Imperfect Knowledge Perfect Knwoledge Perfect Knwoledge

Conduct

Characteristics Perfect Competition Monopoly Monopolistic Competition Oligopoly
Non-Price Competition No Non Price Competition No Non Price Competition Yes, Non Price Competition Yes, Non Price Competition
Price Behavior Price Taker Price Setter Price Setter Price Setter
Output Determination MC = MR MC = MR MC = MR MC = MR

Performance

Characteristics Perfect Competition Monopoly Monopolistic Competition Oligopoly
Short Run Profits Abnormal Profits Abnormal Profits Abnormal Profits Abnormal Profits
Long Run Profits Normal Profits Abnormal Profits Normal Profits Abnormal Profits
Efficiency Allocative & Productively Effieicent
Both Short & Long Run
Allocative(P>MC) & Productively(MC≠AC) Ineffieicent
Both Short & Long Run
Allocative(P>MC) & Productively(MC≠AC) Ineffieicent
Both Short & Long Run
Allocative(P>MC) & Productively(MC≠AC) Ineffieicent
Both Short & Long Run

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