3.4 - Market structures Flashcards
(50 cards)
Allocative efficiency
MC = AR
Fulfilling wants of supply and demand where it maximises both producer and consumer surplus
Productive efficiency
Minimum efficient scale on the average cost (AC) curve
(operating at the lowest point of the AC curve)
Dynamic efficiency
Firm reinvesting profits into the business to improve quality or by making it more productively efficient (reducing costs)
X inefficiency
Lack of competition in the market, leads to a rise in costs due to complacency (lack of incentive to reduce costs)
What is perfect competition
A form of market structure which produces allocative and productive efficiency in the long run
Characteristics of PC (6)
- Large number of buyers and sellers
- Homogenous goods
- Firms are price takers - no influence over the price, the price is set by the market
- No barriers to entry / exit
- Short run profit max
- Perfect information
Diagram in SR
Diagram in LR
Characteristics of monopolistic competition (6)
- Large number of buyers and sellers
- Slight product differentiation (XED is high, meaning firms sell non-homogenous products due to branding)
- Firms are profit maximisers in the SR
- Imperfect information
- No barriers to entry / exit
E.g. hairdressers and pluming
Diagram in SR
Diagram in LR
Advantages of monopolistic competition? (3)
- Consumers have a variety of choice
- More realistic assumption / model than perfect competition market structure
- Dynamic efficiency can be exploited since firm make supernormal profits through investment
Disadvantages of monopolistic competition? (2)
- Dynamic efficiency may be limited due to firms only making normal profits in the LR
- Firms are not as efficient as perfect competition firms in the LR (not allocative and/or productive efficient)
What is an oligopoly?
A form of market structure where there are only a few dominant firms controlling the market
Characteristics of Oligopoly
- High barriers to entry / exit
- High concentration ratio
- Interdependence
- Product differentiation
What is n-firm concentration and what does it provide?
Measures the combined market share of largest firm in the industry
It gives an indication on the level of competition - gives a degree of the market power by largest firms and potential distrust concerns
What does high concentration mean?
More concentrated market with fewer dominant firms
What does low concentration mean?
More competitive market with many smaller number of firms
3 reasons for collusion?
- Maintaining high prices
- Market stability
- Avoids price wars
Reasons for non-collusive behaviour?
- Competition
- Legal restraints
- Different objectives
Overt collusion
When firm openly agrees to cooperate and set prices or output levels
This creates cartels - explicit agreements among firms to coordinate their actions
Tacit collusion
Involves a firm behaving in a similar manner that resembles collusion without any explicit agreement
Where one dominant firm sets the price and others follow in suit - by observing price patterns set by competitors or engage in price leadership
What is prisoners dilemma?
Game theory scenario where two firms make a decision that results in suboptimal outcomes
Both firms aggressively compete = price war = lower profits
Both firms collude = higher prices = higher profits
How does the dilemma arise?
The dilemma arises because each firm has an incentive to abandon the agreement in order to get a more favourable outcome (by gaining greater market share)
It is not in their interest because if both firms do then they will suffer in lower profits as prices will fall