To begin with, a chart covering most quick need to know ideas.
Market Structure
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Perfect Competition
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Monopolistic
|
Oligopoly
|
Monopoly
|
Number of Firms
|
Many
|
Several
|
Few
|
Just One
|
Freedom of Entry
|
Unrestricted
|
Unrestricted
|
Restricted
|
Restricted or Blocked
|
Nature of Product
|
Same
|
Varied by Service/Product
|
Similar
|
Exclusive
|
Implication for Demand Curve
|
Flat
|
Elastic
|
Inelastic/ Kinked
|
Very Inelastic
|
Average Size of Firms
|
Small
|
Small
|
Large
|
Industry
|
Possible Consumer Demand
|
Unlimited
|
Demand = Average Revenue
|
Driven by Competitors
|
No Choice
|
Profit Making Possibly
|
No Economic Profit
|
Short Run Profit Possible
|
Dependant on Competitors
|
Maintained Profit
|
Government Intervention
|
None
|
Between Minor and Nothing
|
Moderate
|
Highest Level
|
A New Example
|
Buying Lobster at the Dock
|
Vietnamese Soup House
|
Automotive Industry
|
FortisAlberta Electricity Distribution
|
Relationship Between Firms
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Indifferent
|
Competitive
|
Competitive/ Cooperative
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All Alone
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