What is monopoly?
a firm that is the only producer of a good or service with no close substitutes.
When is a firm a perfect monopoly?
if it controls the entire market.
When does a firm have monopoly power?
if it can manipulate the price
Why do monopolies exist?
because of barriers to entry that prevent other firms from entering the market:
What does scarce resources mean?
not possible to enter the market because there is scarcity resources or input of the production process
Economies of scale
high fixed costs are better to produce at larger scale to take advantage of economies of scale
- new firms are prevented to enter the market because of this
What is a natural monopoly?
refers to a market where a single firm can produce the entire market quantity demanded at a lower cost than multiple firms.
eg. electricity, drinking water, natural gas
What is government intervention?
monopoly created or sustained by governments where they would not otherwise exist
Aggressive business tactics
incumbent firm prevent new entries
Monopolists and the Demand Curve
face downward-sloping market
- a monopolist can charge any price, but the price affects the quantity demanded
Monopoly Revenue
when a monopolist produces more of a good, the market price is driven down
- in a competitive market, a firm can sell as much as it wants without changing the market price
Profit-maximizing quantity of output for a monopoly
found where Marginal Revenue = Marginal Cost
How do you calculate profit?
Profit = (P-ATC) x Q
The welfare costs of monopoly
a monopoly’s ability to keep quantities low and prices high hurts society in general and consumers in particular
Public policy responses: Antitrust Laws
Competition Act =
Public policy responses: Public ownership
Pros = set prices lower and provide broader services
Cons = political pressure, loss of profit incentive
Public policy responses: Regulation
firms have an incentive to avoid releasing information about their true production costs
Public policy responses: Vertical Splits
introduce competition into parts of the monopoly
- split original firm into companies that operate at different points in the production process
(horizontal split = monopolist is separated into several firms that compete with each other)
Public policy responses: no response
might be preferable if regulation is difficult and or ineffective to establish and manage
- common when government interventions are subject to corruption or political mishandling
What is price discrimination?
the practice of charging customers different prices for the same good (to increase monopoly profits)