07 - The Nature of Industry Flashcards
Market Structure
Structural differences among industries in a market.
Factors such as: Number of firms Relative size of firms - concentration Technical and cost conditions Demand conditions Ease of entry/exit
Concentration
The number and relative size of firms in an industry.
Are there many small firms or just a few large firms?
The Four-Firm Concentration Ratio and Herfindahl-Hirschman Index (HHI) help illustrate concentration in an industry.
Four-Firm Concentration Ratio
The fraction of total industry sales produced by the four largest firms.
Equivalently, the sum of the market shares of four largest firms.
Most popular ratio but crude representation. It ignores firms after the 4th. Industry of 5 and 50 firms could have same ratio eg.
Ratio closer to 0 means many firms
Ratio closer to 1 means fewer firms
Herfindahl-Hirschman Index (HHI)
The sum of the squared market shares of ALL firms in an industry, multiplied by 10,000.
By squaring before adding, large firms are given more relative weight in the assessment.
Ratio range is 0 - 10,000
Closer to zero means many small firms
Value of 10,000 means a single firm.
C4 vs HHI
Limitations
C4 only considers 4 largest and HHI includes all firms. HHI places greater weight on relatively larger firms.
Census Bureau only reports on top 50 firms so raw data for HHI may not be complete.
Concentration ratio limitations
Results of C4 and HHI may be over stated if global companies participate in relevant market.
Results may be under stated if there are many national and regional firms but only a few or one local firm is relevant to buyers. Local utilities are example.
Broad or narrowly defined product classes can skew results. Many beverages classified as soft drinks.
Technology implications
Some industries depend more on labor while others depend more on technology. Comparing ratios of sales per employed person describes level of tech dependency between industries.
Within an industry, a firm with tech not available to competitors will dominate the industry.
Demand and Market Condition implications
Level of:
Demand
Information
Elasticity
Low demand markets may only sustain a few firms. Large demand markets may require many firms to produce adequate supply.
Informed customers increases competitiveness in market.
Many substitutes leads to high elasticity and more competitive environment. The product elasticity of demand for unique products will be close to elasticity of market demand.
Monopolized Industry Demand
The elasticity of product demand is equal to the elasticity of market demand.
Rothschild Index
A measure of the sensitivity to price of the product group as a whole relative to the sensitivity of the quantity demanded of single firm to a change in its price.
The elasticity of demand for total market over elasticity of demand the product of single firm.
Values between 0 and 1
Closer to 0 means EOPD > EOMD.
Closer to 1 means EOPD near = EOMD.
Potential for Entry/Exit
Barriers to Entry:
Explicit costs such as capital investments.
Patent protections
Economies of Scale
Industry Conduct
Conduct differences of industries.
Industries vary by:
Markup - pricing behavior
Susceptibility to mergers and takeovers
Investment in:
Marketing
R&D
Product development
Lerner Index
A measure of pricing behavior.
Measures the difference between price and marginal cost as a fraction of the price of the product. L= (P-MC)/P
Range 0 - 1
Closer to 0 when firms set price close to MC
Closer to 1 when firms set higher prices
Closer to 0 means more competition.
Markup Factor
The factor by which MC is multiplied to derive price of the good.
If Learner Index is 1/2, then the markup factor is 2.
Merger and Integration activity
Integration results in fewer firms - Motivated by desire to gain: Economies of scale or scope Reduce transaction costs Increase market power Gain better access to capital markets
Mergers may be friendly or hostile
Vertical
Horizontal
Conglomerate