MICROECONOMICS – MARKET STRUCTURES & FIRMS ANALYSIS CHAINS

This chapter is EXTREMELY important for Paper 4.

Especially:

• monopoly

• competition

• efficiency

• mergers

• takeovers

• price discrimination

• profit maximisation

• contestability

These essays are NEVER just theory.

Examiners want:

• chains

• efficiency discussion

• consumer impact

• evaluation

• comparison between market structures

PERFECT COMPETITION EFFICIENCY CHAIN

• Many firms compete

• No single firm controls market price

• Firms are price takers

• Strong competitive pressure exists

• Firms minimise costs

• Productive efficiency achieved

• Firms produce where P = MC

• Allocative efficiency achieved

• Consumer welfare maximised

Evaluation:

• unrealistic assumptions

• no product differentiation

• little incentive for innovation

• firms only earn normal profit long-run

MONOPOLY PRICE AND OUTPUT CHAIN

• Monopoly maximises profit where MC = MR

• Output restricted

• Price raised above marginal cost

• Consumers pay higher prices

• Consumer surplus falls

• Supernormal profits earned

• Welfare loss created

• Allocative inefficiency occurs

Evaluation:

• depends on government regulation

• economies of scale may reduce costs

• dynamic efficiency may improve

MONOPOLY ECONOMIES OF SCALE CHAIN

• Large firm expands output

• Average costs fall

• Economies of scale achieved

• Productive efficiency improves

• Firm gains higher profits

• Prices may fall for consumers

Evaluation:

• diseconomies may occur

• monopoly may keep profits instead of lowering prices

• lack of competition reduces pressure

Written and Compiled By Sir Hunain Zia (AYLOTI), World Record Holder With 154 Total A Grades, 11 World Records and 7 Distinctions, Educate A Change.

MONOPOLY DYNAMIC EFFICIENCY CHAIN

• Monopoly earns supernormal profit

• Firm invests in R&D

• Innovation increases

• Technology improves

• Productivity rises

• Long-run costs fall

• Consumers gain improved products

Evaluation:

• monopoly may become complacent

• no competitive pressure to innovate

• depends on contestability

PRICE DISCRIMINATION CHAIN

• Firm charges different prices to different consumers

• Consumer surplus transferred to producer

• Firm revenue rises

• Profits increase

• Some consumers may gain access to product

Evaluation:

• may exploit consumers

• depends on PED differences

• resale prevention necessary

• may improve output and accessibility

THIRD DEGREE PRICE DISCRIMINATION CHAIN

• Firm separates markets by elasticity

• Higher prices charged to inelastic consumers

• Lower prices charged to elastic consumers

• Total revenue rises

• Profits increase

Evaluation:

• fairness concerns

• student/senior discounts may improve equity

• depends on market separation ability

PREDATORY PRICING CHAIN

• Large firm cuts prices aggressively

• Smaller firms unable to compete

• Rivals exit market

• Monopoly power increases

• Firm later raises prices

• Consumer welfare falls long-run

Evaluation:

• illegal in many countries

• difficult to prove intent

• consumers benefit short-run

LIMIT PRICING CHAIN

• Firm sets low price deliberately

• Potential entrants discouraged

• Barriers to entry strengthened

• Monopoly power maintained

Evaluation:

• profits sacrificed short-run

• may fail if entrants highly efficient

MERGER CHAIN

• Two firms combine

• Market share increases

• Economies of scale achieved

• Costs may fall

• Profitability improves

• Market power increases

Evaluation:

• competition may reduce

• consumer prices may rise

• efficiency gains possible

TAKEOVER CHAIN

• One firm acquires another

• Assets and customers expand

• Production scale increases

• Average costs may fall

• Profits increase

• Market dominance strengthens

Evaluation:

• cultural clashes possible

• integration problems occur

• regulators may block takeover

Written and Compiled By Sir Hunain Zia (AYLOTI), World Record Holder With 154 Total A Grades, 11 World Records and 7 Distinctions, Educate A Change.

HORIZONTAL INTEGRATION CHAIN

• Firms in same industry combine

• Market concentration rises

• Competition falls

• Economies of scale achieved

• Market power increases

Evaluation:

• anti-competitive behaviour possible

• lower costs may benefit consumers

VERTICAL INTEGRATION CHAIN

• Firm acquires supplier/distributor

• Supply chain controlled

• Costs reduced

• Efficiency improves

• Reliability of supply increases

Evaluation:

• management complexity increases

• large capital investment required

DIVERSIFICATION CHAIN

• Firm enters new markets

• Revenue sources diversify

• Risk spread across products

• Stability improves

Evaluation:

• lack of expertise may reduce efficiency

• management difficulties possible

REVENUE MAXIMISATION CHAIN

• Firm increases output beyond profit-maximising level

• Sales revenue maximised

• Market share may increase

• Managers gain prestige

Evaluation:

• profits may fall

• shareholders may oppose strategy

SALES MAXIMISATION CHAIN

• Firms prioritise sales growth

• Advertising increases

• Prices may reduce

• Consumer demand rises

• Market share expands

Evaluation:

• profit margins may shrink

• unsustainable long-run

SATISFICING CHAIN

• Managers pursue acceptable profit

• Less focus on maximum efficiency

• Easier managerial objectives achieved

• Workers may gain benefits

Evaluation:

• shareholders may dislike lower profits

• competition may force profit maximisation

CONTESTABLE MARKET CHAIN

• Threat of entry exists

• Existing firms avoid excessive pricing

• Efficiency improves

• Consumers benefit from lower prices

Evaluation:

• barriers to entry may still exist

• sunk costs reduce contestability

BARRIERS TO ENTRY CHAIN

• High startup costs exist

• New firms discouraged

• Competition limited

• Existing firms maintain market power

• Supernormal profits sustained

Examples:

• patents

• branding

• economies of scale

• legal restrictions

Evaluation:

• technology may reduce barriers

• government deregulation may increase competition

ADVERTISING CHAIN

• Firms advertise products

• Consumer awareness increases

• Demand rises

• Revenue and profits increase

• Brand loyalty strengthens

• PED may become more inelastic

Evaluation:

• persuasive advertising may mislead consumers

• costly for firms

• informative advertising may improve consumer choice

Written and Compiled By Sir Hunain Zia (AYLOTI), World Record Holder With 154 Total A Grades, 11 World Records and 7 Distinctions, Educate A Change.

LABOUR PRODUCTIVITY CHAIN

• Worker training improves skills

• Output per worker rises

• Unit costs fall

• Firm competitiveness improves

• Profits increase

• Wages may rise

Evaluation:

• training costly

• benefits may take time

• workers may leave firm afterward

PROFIT MAXIMISATION CHAIN

• Firm produces where MC = MR

• Profit difference maximised

• Supernormal profits possible

• Shareholder returns improve

Evaluation:

• firms may pursue other objectives

• depends on market structure

PRODUCTIVE EFFICIENCY IN FIRMS CHAIN

• Average costs minimised

• Resources used efficiently

• Waste reduced

• Prices may fall

• Consumer welfare improves

Evaluation:

• efficiency may reduce employment

• automation costly initially

ALLOCATIVE EFFICIENCY IN FIRMS CHAIN

• Price equals marginal cost

• Output reflects consumer preferences

• Welfare maximised

• No deadweight loss

Evaluation:

• rarely achieved in monopoly

• externalities distort allocation

DYNAMIC EFFICIENCY IN FIRMS CHAIN

• Innovation increases

• Technology improves

• Productivity rises

• Costs fall over time

• Better products created

Evaluation:

• requires investment funds

• uncertainty may discourage R&D

X-INEFFICIENCY CHAIN

• Monopoly faces little competition

• Pressure to minimise costs weakens

• Managerial inefficiency increases

• Costs rise unnecessarily

• Productive inefficiency occurs

Evaluation:

• regulation may reduce inefficiency

• contestability may increase pressure

COMMON PAPER 4 EVALUATION POINTS FOR MARKET STRUCTURES

Always use:

• depends on contestability

• short-run vs long-run

• economies vs diseconomies of scale

• consumer welfare effects

• dynamic efficiency

• government regulation

• degree of competition

• barriers to entry

• innovation incentives

PERFECT MARKET STRUCTURE ANALYSIS FORMULA

CHANGE IN MARKET STRUCTURE
→ CHANGE IN COMPETITION
→ CHANGE IN PRICE/OUTPUT
→ CHANGE IN EFFICIENCY
→ CHANGE IN CONSUMER WELFARE
→ LONG-RUN MARKET EFFECTS
→ EVALUATION

ULTRA IMPORTANT EXAM CHAIN

Competition increases
→ firms lower prices
→ consumer demand rises
→ firms improve efficiency
→ productivity rises
→ consumer welfare improves

Evaluation:

• excessive competition may reduce profits

• firms may cut quality

• long-run investment may fall

Written and Compiled By Sir Hunain Zia (AYLOTI), World Record Holder With 154 Total A Grades, 11 World Records and 7 Distinctions, Educate A Change.

BIGGEST MARKET STRUCTURE MISTAKE

Students explain monopoly theory ONLY.

Top-band Paper 4 answers ALWAYS continue toward:

• efficiency

• welfare

• consumers

• long-run effects

• evaluation

Example:

“Monopolies restrict output.”

Weak.

Strong:
“Monopolies restrict output to raise prices and maximise profit, reducing consumer surplus and creating allocative inefficiency, although economies of scale and dynamic efficiency may offset some welfare losses depending on regulation and contestability.”

THAT is A-grade Paper 4 analysis.