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Economics of Strategy - My LIUCmy.liuc.it/MatSup/2005/F85444/Besanko_ch02.pdf · Horizontal...
Transcript of Economics of Strategy - My LIUCmy.liuc.it/MatSup/2005/F85444/Besanko_ch02.pdf · Horizontal...
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Economics of Strategy
Slides by
Richard PonArulCalifornia State University, Chico
John Wiley & Sons, Inc.
Chapter 2
Horizontal Boundaries of the Firm
Besanko, Dranove, Shanley and Schaefer, 3rd Edition
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Horizontal Boundaries
l Horizontal boundaries: How big a market does a firm serve?
l In some industries a few large firms dominate the market (Commercial aircraft manufacture)
l In others, smaller firms are the norm (Apparel design, Universities)
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Horizontal Boundaries
l There are several industries where large firms and small firms co-exist (Software, Beer, Banks, Insurance companies)
l What determines the horizontal boundaries of firms?
l How should a firm optimally choose its horizontal boundaries?
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Determinants of Horizontal Boundaries
l Economies of scale– Declining average cost with volume
l Economies of scope– Cost savings when different goods/services are
produced “under one roof”
l Learning curve– Cost advantage from accumulated expertise and
knowledge
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Economies of Scale
l When the marginal cost is less than average cost, there are economies of scale
l Example: Computer software. The marginal cost of reproducing a CD is negligible compared with the huge fixed cost associated with software development
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U-shaped cost curve
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U-Shaped Cost Curve
l Average cost declines as fixed costs are spread over larger volumes
l Average cost eventually start increasing as capacity constraints kick in
l U-shape implies cost disadvantage for very small and very large firms
l Unique optimum size for a firm
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L-shaped Cost Curve
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L-shaped Cost Curve
l In reality, cost curves are closer to L-shaped curves that to U-shaped curves
l A minimum efficient size (MES) beyond which average costs are identical across firms
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Economies of Scope
l Firm 1 produces two products: A and Bl Firm 2 produces A onlyl If the cost of producing A is smaller for Firm 1
than Firm 2, there are economies of scope
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Economies of Scope
l TC(QA, QB) < TC(QA, 0) + TC(0, QB)l TC(QA, QB) – TC(0,QB) < TC(QA, 0) – TC(0, 0)l Production of B reduces the incremental cost
of producing A
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Economies of Scope
l Common expressions that describe strategies that exploit the economies of scope– “Leveraging core competences”– “Competing on capabilities”– “Mobilizing invisible assets”– Diversification into related products
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Economies of Scope
l The terms “Economies of Scale” and “Economies of Scope” are sometimes used interchangeably
l Managers may cite economies of scale and scope (even when they do not exist) to justify investment in growth
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Some Sources of Economies of Scale/Scope
l Production related– Fixed costs– Inventories– Cube-Square rule
l Other– Purchasing– Advertising– R & D
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Fixed Costs
l Certain inputs in the production process may not fall below a minimum
l Increasing the volume of production yields economies of scale in the short run
l In the long run, economies of scale are obtained through choice of technology
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Tradeoffs Among Technologies
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Tradeoffs Among Technologies
l If output needs to be increased beyond a point, capital intensive technology needs to be substituted for labor intensive technology
l The “lower envelope” of the two cost curves is the long run average cost curve
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Long Run and Short Run
l Cost reduction through better capacity utilization– (short run economies of scale)
l Cost reduction by switching to high fixed cost technology– (long run economies of scale)
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Economies of Scale and Specialization
l “The division of labor is limited to the extent of the market”
l As markets increase in size, economies of scale enables specialization
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Economies of Scale and Boundaries
l Larger markets lead to specialized firmsl As markets get even larger, the specialized
activity may become “in house” due to economies of scale
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Inventories
l Firms carry inventory to avoid stock outsl In addition to lost sales, stock outs can
adversely affect customer loyaltyl Bigger firms can afford to keep smaller
inventories (relative to sales volume) compared with smaller firms
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Inventories
l Two firms may not experience stock outs at the same time
l Merging the two firms will reduce the probability of stock out, given the level of inventory
l The combined firm can maintain a lower level of inventory and have the same probability of stock out as before
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Aircraft, Rolling Stock as Inventories
l The inventory model applies to aircraft, rolling stock and road vehicles
l A larger bus company can keep a smaller number of “spare buses” (relative to size of operations) and still provide reliable service, whereas smaller companies need (proportionately) larger number of spares
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Cube-Square Rule
l Double the diameter of a hollow sphere and the volume will increase eightfold, whereas the surface area will increase only fourfold
l The cost of the sphere is likely to increase by less than eight times
l If the hollow sphere is part of production equipment in a chemical plant, cost savings follow from increased size
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Cube-Square Rule
l Examples of Scale Economies due to the Cube-Square Rule– Oil pipelines– Warehousing– Brewing tanks
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Economies of Scale in Purchasing
l Large buyers can get volume discounts– Reduced transaction costs– More aggressive bargaining by large buyers– Assured flow of business for the supplier
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Economies of Scale in Purchasing
l Example: Group insurance is typically cheaper than individual insurance.
l Big buyers like CalPers (California Public Employee Retirement Systems) drive hard bargains with the insurers
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Rationale for Volume Discounts
l Cost of service (per unit) is lower for large buyers
l Large buyers may be more price sensitivel Large buyers can disrupt operations of the
seller by refusing to buy
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Economies of Scale in Purchasing
l Alternatives to bigness– Small firms can join purchasing alliances– Price sensitive firms may get better bargains even
when they are small
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Economies of Scale and Scope in Advertising
l Cost per customer = (Cost per potential customer) x (Proportion of potential customers who become actual customers)
l Large firm have lower cost of reaching a potential customer (First Term)
l Large firm also have a better reach (Second Term)
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Economies of Scale in Advertising
l Large national firms may experience lower cost per potential customer when compared with small regional firms
l Cost of production of the advertisement and the cost of negotiations with the media can be spread over different markets
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Economies of Scale in Advertising
l Large firms may have better reach than small firms– Example: ubiquity of STARBUCKS
l Large firms convert a larger proportion of potential customers into actual customers
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Umbrella Branding and Economies of Scope
l Well known brands like SONY and KRAFT cover different products
l There are economies of scope in developing and maintaining these brands
l New products are easier to introduce when there is an established brand with the desired image. (SONY introduces digital cameras)
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Umbrella Branding - Limitations
l Umbrella branding may not always help– Example: In the U.S. Lexus is a separate brand
from Toyota
l Conflicting brand images may cause diseconomies of scope
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Economies of Scale in R & D
l Minimum feasible size for R & D projects and R & D departments
l Economies of scope in R & D; ideas from one project can help another project
l Under what conditions can firms pool their resources for a joint R & D effort?
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Innovation and Size
l Are big firms better at innovating compared to small firms?
l Size reduces the average cost of innovationsl Smallness may be more suitable for motivated
researchers
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Other Sources of Economies of Scale
l Access to a distribution networkl Established governmental relations
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Strategic Fit
l Strategic fit is complementarity that yields economies of scope
l Strategic fit renders piece-meal copying of corporate strategy by rivals unproductive
l Strategic fit is essential for long term competitive advantage
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Diseconomies of Scale
l Beyond a certain size, bigger may not always be better
l The sources of such diseconomies are– Increasing labor costs– Bureaucracy effects– Scarcity of specialized resources– “Conflicting out”
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Firm Size and Labor Cost
l Data indicate that workers in large firms get paid more than workers in small firms
l Possible reasons– Unionization is more likely in large firms– Work may be more enjoyable in small firms– Large firms may have to attract workers from far
away places
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Firm Size and Labor Cost
l Large firms experience lower worker turnover compared to small firms
l Savings in recruitment and training costs due to lower turnover may partially offset the higher labor cost
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Bureaucracy Effects and Firm Size
l When a firm gets large– it is difficult to monitor and communicate with
workers– it is difficult to evaluate and reward individual
performance– detailed work rules may stifle the creativity of the
workers
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Specialized Resources
l As the firm expands, certain resources may be limited in availability
l Example: As a restaurant expands, the chef may find himself/herself spread too thin
l Other limited resources may be– desirable locations– specialized workers– talented managers
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“Conflicting Out”
l Professional services firms may find it difficult to sign up a client if a competitor is already a client of the firm
l When sensitive information has to be shared, such conflicts may impose a limit to the growth of the firm
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The Learning Curve
l Learning economies are distinct from economies of scale
l Learning economies depend on cumulative output rather than the rate of output
l Learning leads to lower costs, higher quality and more effective pricing and marketing
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The Learning Curve
AC1
AC2
AC
Q 2QQuantity
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Slope of the Learning Curve
l Slope of the learning curve is the relative size of the average cost when cumulative output doubles
l A slope of 0.9 indicates that the average cost will decline by 10% when the cumulative output doubles
l Learning flattens out over time and the slope eventually becomes 1.0
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Learning Curve Strategy
l Expand output rapidly to benefit from the learning curve and achieve a cost advantage
l May lead to losses in the short term but ensure long term profitability
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BCG’s Growth/Share Paradigm
l Product life cycle model combined with an internal capital market, with the firm serving as a banker
l Use the cash generated by “cash cows” to exploit the learning economies of “rising stars” and “problem children”
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BCG’s Growth/Share Matrix
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Individual Learning and Organizational Learning
l Learning resides with individualsl Organizational learning includes expertise that
individuals have and they complement each other
l Worker mobility can lead to loss of expertise in the organization
l On the other hand, reducing job turnover may stifle creativity
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Learning Curve and Scale Economies
l Learning reduces unit cost through experiencel Capital intensive technologies can offer scale
economies even if there is no learningl Complex labor intensive processes may offer
learning economies without scale economies