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Chapter Introduction
Section 1: Perfect Competition
Section 2: Monopoly, Oligopoly,
Monopolistic Competition
Section 3: Government Policies
Toward Completion
Visual Summary
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Think about the products that you
buy most frequently. Are they
produced by just one company, or
do you have choices about where
to buy the items? In this chapter,
read to learn how competition—or
the lack of it—determines the
prices you pay.
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Section Preview
In this section, you will learn about perfect
competition and how this market structure
benefits consumers.
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Content Vocabulary
• market structure
• perfect competition
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Academic Vocabulary
• initial
• interact
• unique
7
Can you name some reasons that
competition is important for
consumers?
A. Yes
B. No
A. A
B. B
0%
A
0%
B
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Market Structure and Perfect
Competition
Market structure refers to the extent of
competition within particular markets.
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Market Structure and Perfect
Competition (cont.)
• Businesses are categorized by market
structure or the amount of competition
they face.
View: Comparing Market Structures
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Market Structure and Perfect
Competition (cont.)
• The four basic market structures in the
American economy are:
– Perfect competition (also known as pure
competition)
– Monopolistic competition
– Oligopoly
– Monopoly
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Market Structure and Perfect
Competition (cont.)
• Five conditions must be met for perfect
competition (pure) to take place:
– A large market
– A nearly identical product
– Easy entry and exit to the market
– Easily obtainable market information
– Independence of sellers and buyers
12
Market Structure and Perfect
Competition (cont.)
• True perfect competition is rarely seen.
• The ability of consumers to obtain information
is key to sustaining competition.
13
Under which type of market would the
most competition exist?
A. Monopoly
B. Oligopoly
0%
D
A
0%
A
B
C0%
D
C
D. Perfect Competition
A.
B.
C.
0%
D.
B
C. Monopolistic competition
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Agriculture as an Example
Agriculture markets come close to a
perfectly competitive market structure.
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Agriculture as an Example (cont.)
• No single wheat farmer has any great
influence on wheat prices.
• The market price for wheat is determined
by the interaction of supply and demand,
and individual wheat farmers have to
accept the market price.
• People’s demand for wheat is relatively
inelastic.
View: A Classic Example
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Agriculture as an Example (cont.)
• Supply is highly dependent on conditions
over which farmers have little or no
control.
• The intense competition in a perfectly
competitive industry forces the price down to
one that just covers the costs of production
plus a small profit.
• All inputs are used in the most
advantageous way possible allowing an
efficient allocation of productive resources.
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The wheat market fulfills all five of the
conditions needed to create perfect
competition.
A. True
B. False
A. A
B. B
0%
A
0%
B
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Section Preview
In this section, you will learn about three
types of imperfect market structures:
monopoly, oligopoly, and monopolistic
competition.
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Content Vocabulary
• monopoly
• product differentiation
• barriers to entry
• cartel
• economies of scale
• monopolistic
competition
• patent
• copyright
• oligopoly
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Academic Vocabulary
• revolution
• dominate
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Monopoly
A monopoly exists when a single seller
controls the supply of a good or
service and largely determines its
price.
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Monopoly (cont.)
• The most extreme form of imperfect
competition is a pure monopoly.
• In a pure monopoly, a single seller controls
the supply of the good or service and thus
determines its price.
• A monopolist can raise prices, but cannot
charge outrageous prices.
View: A Monopoly Market Structure
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Monopoly (cont.)
• A monopoly is protected by barriers to
entry.
• The cost of getting started (“excessive
money capital costs”) can be a barrier.
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Monopoly (cont.)
• The four types of monopolies are:
– Natural—the government grants exclusive
rights to companies that provide things like
utilities, bus service, and cable TV.
• The larger size of these gives them
economies of scale.
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Monopoly (cont.)
– Geographic—the setting of this business
is isolated and the potential for profits is
small, so other businesses don’t enter
the market.
– Technological—if you invent something,
you are capable of having this type of
monopoly over your invention.
• Patent
• Copyright
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Monopoly (cont.)
– Government—this monopoly is held by
the government itself.
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The postal service would fall under
which type of monopoly?
A. Natural
B. Geographic
C. Technological
D. Government
0%
A
A.
B.
C.
0%
D.
B
A
B
C
0%
D
C
0%
D
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Oligopoly
An oligopoly exists when an industry is
dominated by a few suppliers that
exercise some control over price.
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Oligopoly (cont.)
• An oligopoly is an industry dominated by
several suppliers who exercise some
control over price.
• Oligopolists engage in nonprice
competition.
• The price you pay is based on product
differentiation in addition to supply and
demand.
View: An Oligopoly Market Structure
View: Oligopolies
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Oligopoly (cont.)
• With so few firms in an oligopoly, whatever
one does, the others will follow.
• If competing firms secretly agree to raise
prices or to divide the market, they are
performing an illegal act called collusion.
• One significant form of collusion is the
cartel.
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Which two aspects make oligopolies
safer than monopolies?
A. Stable prices and
easy entry
0%
D
0%
A
D. Less advertising
and stable prices
C
C. Stable prices and
more variety
A. A
B. B
C. 0%C
0%
D. D
B
B. More variety and
less advertising
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Monopolistic Competition
Monopolistic competition exists when a
large number of sellers offer similar but
slightly different products, and each
firm has some control over price.
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Monopolistic Competition (cont.)
• The most common form of market
structure in the U.S. is monopolistic
competition.
• The major difference between monopolistic
competition and an oligopoly is in the
number of sellers of a product.
• Competitive advertising is key in this type of
market.
View: Market Structure of Monopolistic
Competition
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How is monopolistic competition
different from an oligopoly?
0%
A
A. A
B. B
C.0%C
B
0%
C
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Section Preview
In this section, you will learn about steps
the government has taken to regulate
business practices.
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Content Vocabulary
• interlocking directorate
• antitrust legislation
• merger
• conglomerate
• deregulation
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Academic Vocabulary
• prohibit
• promote
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Do you feel that the government
should intervene in issues concerning
competition?
A. Always
B. Sometimes
C. Never
0%
A
A. A
B. B
C.0%C
B
0%
C
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Antitrust Legislation and Mergers
The goal of antitrust legislation is to
encourage competition in the economy
and to prevent unfair trade practices.
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Antitrust Legislation and Mergers (cont.)
• The practice of creating interlocking
directorates was perfected by John D.
Rockefeller at the end of the 19th century.
• His monopoly over the oil business led
Congress to pass the Sherman Antitrust
Act in 1890.
• This law sought to protect trade and
commerce against unlawful restraint and
monopoly.
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Antitrust Legislation and Mergers (cont.)
• The Sherman Antitrust Act was important
antitrust legislation.
• The Clayton Act of 1914 sharpened the
previous antitrust law, prohibiting or limiting
a number of very specific business practices
that lessened competition substantially.
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Antitrust Legislation and Mergers (cont.)
• Most antitrust legislation deals with
restricting the harmful effects of mergers.
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Antitrust Legislation and Mergers (cont.)
• Three kinds of mergers exist:
– Horizontal—corporations that merge are
in the same business.
– Vertical—corporations involved in a
“chain” of supply merge.
– Conglomerate—a large corporation
merges with smaller corporations
dealing in unrelated businesses.
View: Mergers
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If an oil refinery merges with a chain
of gas stations, which kind of merger
would this be?
A. Horizontal
B. Vertical
C. Conglomerate
0%
A
A. A
B. B
C.0%C
B
0%
C
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Government Regulation
The aim of government regulatory
agencies is to promote efficiency,
competition, fairness, and safety.
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Government Regulation (cont.)
• The government uses direct regulation of
business pricing and product quality in
addition to antitrust laws to foster a
competitive atmosphere.
• Many industries were deregulated in the
1980s and 1990s since government
regulations had actually decreased the
amount of competition in the economy.
View: Federal Regulatory Agencies
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Look at the cartoon on page 249.
What specifically is the cartoonist
implying about deregulation with this
cartoon?
A. A
B. B
C. C
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Of the four basic market structures,
perfect competition and monopolies are rare,
while monopolistic competition and
oligopolies are much more common.
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The level of competitiveness in a
particular market is determined by several
factors.
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Government regulatory agencies
seek to promote efficiency, competition,
fairness, and safety.
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Economic Concepts
Transparencies
Transparency 9
Competition and
Market structure
Select a transparency to view.
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market structure: the extent to which
competition prevails in particular
markets
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perfect competition: market
situation in which there are numerous
buyers and sellers, and no single
buyer or seller can affect price
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monopoly: market situation in which
a single supplier makes up an entire
industry for a good or service with no
close substitutes
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barriers to entry: obstacles to
competition that prevent others from
entering a market
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economies of scale: low production
costs resulting from the large size of
output
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patent: exclusive right to make, use,
or sell an invention for a specified
number of years
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copyright: exclusive right to sell,
publish, or reproduce creative works
for a specified number of years
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oligopoly: industry dominated by a
few suppliers who exercise some
control over price
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product differentiation:
manufacturers’ use of minor
differences in quality and features to
try to differentiate between similar
goods and services
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cartel: arrangement among groups of
industrial businesses to reduce
international competition by
controlling the price, production, and
distribution of goods
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monopolistic competition: market
situation in which a large number of
sellers offer similar but slightly
different products and in which each
has some control over price
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interlocking directorate: a board of
directors, the majority of whose
members also serve as the board of
directors of a competing corporation
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antitrust legislation: federal and
state laws passed to prevent new
monopolies from forming and to
break up those that already exist
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merger: the legal combination of two
or more companies that become one
corporation
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conglomerate: large corporation
made up of smaller corporations
dealing in unrelated businesses
(Must be involved in at least four or
more unrelated businesses.)
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deregulation: reduction of
government regulation and control
over business activity
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