ECONOMICS- New Journal
Economics for Decision-Making
Week 8
Winter 2017
Plan
Monopoly
Welfare Effects
Natural Monopoly
Pricing Strategies
The Web’s New Monopolists case discussion
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Market Power
A firm has market power when it can profitably charge a price that exceeds marginal cost
Most firms have some market power
Main determinant
Market definition
Barriers to entry
Monopoly pricing
MR=MC
Shut-down rule
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Monopoly Profit Maximization
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Welfare Effects of Monopoly Power
Surplus analysis
Benchmark
Relative to perfect competition
Price
Quantity
Surplus(welfare) effects
Firm gains
Consumers lose
Deadweight loss!
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Welfare Effects of Monopoly Power
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Other Costs/Benefits from Monopoly Power
How big are real-life deadweight losses?
Recall benchmark
Monopoly power brings
Product diversity/quality
Advertising
Informative
Persuasive
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Other Costs/Benefits from Monopoly Power…
Incentives for…
Investment
Innovation/R&D
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Role of Intellectual Property Rights
Disincentives for R&D can come from:
Strong patents for early generationsless incentives for later generations
Poorly defined boundaries of intellectual propertyrisk of litigationdon’t innovate
Incumbents build “thickets” of strategic patents tha cover little innovation and are just legal weapons to protect incumbents’ profitspatent trollslitigation risk high
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Costs of influencing regulation/restrictions
Lobbying and rent-seeking
What is rent-seeking?
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Regulation of Monopolies
Public Interest Theory: Government actions aimed at making monopoly outcome more competitive by keeping price closer to marginal cost serve public interest
Capture Theory: Regulation creates costs and benefits Exchange/Capture is possibleserve industry
regulators work for interests of industry rather than public interest
Revolving door between industry and regulatory body
Competition policies can either:
Regulate acquisition of monopoly power (Antitrust legislation),
Regulate exercise of monopoly power (direct price regulations). Mostly confined to utilities in the U.S.
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Why Are Some Monopolies Regulated?
Why regulate?
Political pressure and economic concern about market dominance
If governments create monopolies they may regulate them to protect consumers
Create a monopoly to ensure that goods are produced at least cost Natural Monopoly
A market is a natural monopoly when a good is produced at least cost by a single firm
Large fixed (sunk) costs
Average cost falls as quantity increases
Second firm may enter but this would cause costs to rise
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Natural Monopoly
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Natural Monopoly Regulation
First-best solution
Price at which P=MC Aggregate surplus will be maximized
Problem….
Which leads to the Second-best solution
Social loss (DWL) vs. private loss (profit)
Who pays?
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Natural Monopoly Regulation—first best vs. second best, private loss vs DWL
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Sustainability of Natural Monopoly
Do Natural Monopolies last forever?
Electricity?
Demand
Technology
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Price Discrimination
Charge different prices for different units of the same good (possibly to different buyers)
Examples
Some consumers receive more surplus than others
Charge…
Some consumers don’t buy units they value less than the monopoly price but more than MC
Charge…
Ultimate goal is to…
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Capturing Surplus through Price Discrimination
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Price Discrimination…
Conditions for price discrimination
Market power
Item must be difficult to resell
Market segments must be identifiable Criterion…
Price differences not fundamentally driven by MC differences
Quality discrimination
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First Degree (Perfect) Price Discrimination
Each unit is sold…
To the consumer who values it the most
At a price equal to the consumer’s willingness to pay
Properties of equilibrium
Surplus distribution
Efficiency
How to implement?
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Perfect Price Discrimination
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Price Discrimination – Assessing WTP
Hard to know a given consumer’s WTP
Alternative methods
Based on observable characteristics
Examples
Based on self-selection
Examples
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Third Degree Price Discrimination
Firm sorts consumers into groups based on observable characteristics
Characteristics imply fundamental differences in WTP
Firm likely knows ordinal (not cardinal) WTP
Examples
Charge a higher price to groups with less elastic demand
Intuition
Examples
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Third Degree Discrimination: Profit-Maximizing
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Third Degree Discrimination: Welfare Effects
Firm is better-off
Individual consumer segments may be better or worse-off
Inefficient redistribution
Consumers as a whole may be better or worse-off
If total quantity contracts, consumers are worse-off as a group
If total quantity expands, consumers may be better-off as a group
New markets may be created---more on this later
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Second Degree Price Discrimination
Firm may be unable to distinguish between groups of consumers based on observable characteristics
Price discrimination may still be possible
Solution: Offer a menu of alternatives
If properly designed, customers with different willingness to pay will choose different alternatives
Examples
Airfares
Insurance
Other
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New Market--Damaged Goods
Firm intentionally damages or hobbles a product to create an additional market
Damaging process must be costless
Examples; pro vs student software; disabling features on software or hardware
Pricing must be such that damaged and undamaged versions must appeal to different groups
“Fanning” of price and attributes
--large enough difference to induce market separation
Effects on overall welfare
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Bundling
Bundling is offering or supplying related products or services in a single transaction at one all-inclusive price
Examples
It can be exclusionary, and potentially anticompetitive if compounded with leveraging (placing a less popular product in the same package as a very popular product)
Example: “Browser Wars”
Netscape Navigator initially dominant browser
Microsoft bundled IE with Windows 98, and forced OEM’*s to license and install IE in all PC’s they shipped
Two sides to the story
DOJ: Bundling exclusionary, anti-competitive, and predatory
Microsoft: Combination of IE and Windows offered superior functionality (better “product integration”)
* resell a product under their own name and branding; provide components
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Bundling as a Pricing Strategy…
Conditions purchase of a product on the purchase of a different product
Examples
Charge more to consumers with a low value for one good but high value for the other
Demands must have some negative correlation
Next session
Pay for Performance case discussion
Game Theory and Oligopoly
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