4.1.5 Perfect competition, imperfectly competitive markets and monopoly Flashcards
What do we assume is the main objective of firms?
Profit maximising
At what quantity is profit maximised?
MC=MR
How is SNP calculated on a monopoly diagram?
TR - TC
(Q profit maximisation * P where Q=AR) - (Q pm * P Q=AC)
What other objectives might firms have?
Revenue maximising or sales maximising
At what quantity is revenue maximised?
MR=0
At what quantity are sales maximised?
AC=AR (normal profit made)
What is the satisficing principle?
When firms may accept lower profit to satisfy a broader range of objectives, often considering all stakeholders
What is the principle agent problem?
Can managers be trusted to work in favour of corporate objectives that are generally seen through the perspective of the shareholders
Can be resolved by bonuses or giving staff shares of business
How many firms/buyers are in perfect competition?
Very many
What is the level of barriers to entry/exit in perfect competition?
No barriers
What type of product is in perfect competition?
Homogenous (interchangeable)
How is information distributed in perfect competition?
Buyers/sellers have perfect information
Describe perfect competition profit
SNP in SR
Normal profit in LR
Are firms price makers or takers in perfect competition?
Takers
In what ways are firms in perfect competition efficient?
Allocative efficiency
Productively efficiency
X-efficiency
What is the elasticity of the D/AR curve in perfect competition?
Perfectly elastic
How many firms are in monopolistic competition?
Many
What is the level of barriers to entry/exit in monopolistic competition?
Low barriers
What type of product is in monopolistic competition?
Differentiated products (through limited advertising/ customer service and relations/ different products)
How is information distributed in monopolistic competition?
Balanced/equal information between buyers and sellers
Describe monopolistic competition profit
Possible SNP in SR
Normal profit in LR
Are firms price makers or takers in monopolistic competition?
Takers
In what ways are firms in monopolistic competition efficient?
X-efficient
What is the elasticity of the D/AR curve in monopolistic competition?
Elastic
How many firms are in an oligopoly?
Few/several
What is the level of barriers to entry/exit in an oligopoly?
High barriers
What type of product is in an oligopoly?
Homogenous or differentiated
How is information distributed in an oligopoly?
Asymmetric information, firms have more
Describe profit in an oligopoly.
Possible SNP in LR
Are firms price makers in an oligopoly?
Takers, can be makers in LR due to high barriers to entry/exit
In what ways are firms in an oligopoly efficient?
Dynamic efficiency
What is the elasticity of the D/AR curve in an oligopoly?
Kinked demand curve:
Elastic at Q < equilibrium
Inelastic at Q > equilibrium
How many firms are in a monopoly?
One
What is the level of barriers to entry/exit in a monopoly?
Very high i.e. insurmountable
What type of product is in a monopoly?
Unique
How is information distributed in a monopoly?
Asymmetrical, firms have more