John Morecroft, London Business
School
Abstract
The
People Express case (Whitestone 1983) and simulator Sterman
(1988) have been widely used to introduce the pitfalls of fast growth
strategy. In real life People Express
airline was a fascinating case. The
company grew from obscurity to industry prominence in a period of only five
years against powerful rivals. Dramatic
growth was followed by equally dramatic demise.
The
reason for the company's rise and fall is usually explained as a variant of the
growth and underinvestment syndrome.
Service capacity failed to keep pace with the growth of flights and
passengers and so, ultimately, the service reputation of the business was
destroyed. At first glance this argument
seems compelling. But it fails to
explain why, in real life, a company could have made such a fundamental
strategic error without realising it.
The
paper outlines a method for analysing the rise and fall of People Express in
steps that reveal the dynamic complexity of the business. The approach builds on two influential sets
of ideas taken from the strategy field and unites them with conventional system
dynamics: 1. the so-called resource-based view of the firm; and 2. the dominant logic of the firm.
The first step in applying this "dynamic resource-based view" is to
identify the tangible and intangible resources of the fledgling airline, such
as planes and service reputation. The second step is to examine the dominant
logic of the policies that control the expansion of resources. A combination of partial and whole model
simulations then reveals why the dominant logic remains unchanged as the firm
loses and destroys its competitive advantage.
The
paper ends by outlining some exciting areas for future research that may be
amenable to a dynamic resource-based view of the firm.
People Express: Growth and Underinvestment, But Why?
In
The Fifth Discipline Senge 1990 outlines a theory of what
happened at People Express that builds on the growth and underinvestment
archetype (chapter 8, pages 130-135). At the heart of the theory is
underinvestment in service capacity.
Moreover (and most important for such a theory) is the proposition that
underinvestment was very difficult for managers at People Express to discern at
the time the company's spectacular growth was taking place. Investment in service capacity is driven by a
'perceived need to improve service quality' and fails to keep pace with the
growth of passengers. But
why? Senge
hints at two reasons (each informed by feedback thinking and the chosen
archetype): 1. service capacity
(controlled by a balancing loop) did not keep pace with the growth of planes
(controlled by a powerful re-inforcing loop); and 2.
(implicitly) this imbalance was masked by tremendous
growth in headcount which did not fully translate into corresponding growth in
service capacity. Nevertheless one is
left wondering why the company persisted in its aggressive fleet expansion and
why (in its hiring policy) the company did not appreciate that headcount and
service capacity are fundamentally different.
To
examine these anomalies we turn to two sets of ideas from the strategy
literature. The first is the so-called
resource based view of the firm which explains differences in firms'
performance and competitive position in terms of endowments of critical
productive assets or resources (Barney 1991, Foss et al 1995). In particular we draw on a dynamic view of
resource accumulation developed by Dierickx and Cool
1989 which makes the same distinction between stocks
and flows (or levels and rates) as found in system dynamics. The second idea is the notion of dominant
logic which provides a cognitive/behavioural explanation for different
managerial styles of resource management (originally introduced into the
strategy literature by Prahalad and Bettis 1986 as a way of explaining differences of
performance in diversified firms). Dominant logic is very similar to policy
logic in system dynamics (Morecroft 1985 and 1994).
Resource Accumulation - the Time Dimension
of Strategy
Figure
1 below will come as no surprise to system dynamicists. It is the familiar bathtub image of levels
and rates. Here the image is being used
to depict the accumulation of a strategic asset stock as the result of an
inflow of strategic expenditures and an outflow of depreciation. This icon of stock accumulation is a key part
of Dierickx and Cool's contribution to the resource-based
strategy literature. In a nutshell they are saying that in order to understand
resource endowments (and therefore competitive advantage) one has to understand
the process of resource accumulation.
"A key dimension of strategy is the task of making appropriate choices about
strategic expenditures with a view to accumulating required resources and
skills". At People Express
strategic asset stocks (or resources) include tangibles such as the fleet,
staff and customers as well as intangibles such as service reputation and staff
morale. The success (and sustainability)
of People Express' competitive strategy then depends on the balance of
resources achieved in relation to competitors.
Figure
1: Visualising the Accumulation of
Resources, First Step Toward a Dynamic Resource-Based
View of Strategy
Resource Management and Dominant Logic: a Framework for Understanding Dynamic
Complexity at the Level of Resources and Policies
Dierickx and Cool's ideas have
been important in the strategy literature because they directed attention away
from static endowments of resources toward the dynamics of resource
accumulation. However, their thinking about flows is framed in terms of
strategic expenditures and does not adequately deal with the managerial logic
that drives resource management. In
People Express we really want to know why the fleet of
planes grew at the rate it did, and why service capacity failed to keep pace with the
growth of either planes or staff (headcount).
Once we can understand the logic driving resource accumulation then it
should be possible to explain how competitive advantage turned (invisibly) to
disadvantage.
Resource
management fits naturally with resource accumulation in system dynamics. Figure 2 shows an operating policy for
resource management overlaid on a generic resource accumulation process
involving both a fully productive resource and a resource in development. The resulting stock and flow network is familiar
to all system dynamicists. The policy governing corrective action
contains information feedback and goal adjustment that encapsulates the
dominant logic of resource management (Forrester 1961 chapter 10, Morecroft 1994, Sterman
1989). The terminology of the diagram
needs no further explanation (at least for ISDC 97 readers). Its power (for
dynamic theories of strategy) lies in its ability to represent both resource
accumulation (Warren 1997) and dominant logic.
When these two powerful ideas from the strategy literature are united
through the discipline of system dynamics and brought to life with simulation,
a versatile framework then exists to develop and test dynamic theories of
resource accumulation - including cases such as People Express where initial
success turns inadvertently into failure.
Figure
2: Operating Policy for Resource
Management - Goals and Information Feedback
Applying the Framework to People
Express
The
first step in a dynamic resource-based analysis is to classify resources into
tangible-intangible and managed-unmanaged.
For People Express the relevant information is in the case and it is a
matter of (modelling) judgement which of the many listed resources to
include. Obvious tangibles are planes,
staff and passengers. Intangibles
include service reputation and staff morale.
The classification into managed and unmanaged resources is quite subtle,
but it is vital because it is often unmanaged resources (usually invisible at
the operating level, and often intangible) that are
the undoing of an otherwise successful strategy of resource accumulation. Figure 2 above provides some clues of what to
look for in making the managed-unmanaged classification. For a typical managed resource there is
usually a clear desired condition or goal.
The apparent condition of the resource is often measurable. As a result the gap that drives corrective
action is objective and beyond dispute and the managerial feedback control
process is purposive and goal-directed.
A simple and familiar example would be a production policy that manages
factory inventory to a strict goal. If
all resources in a firm were managed with such ideal clarity (and if all
underlying goals were not only clear but also internally consistent) then an
effective resource strategy should emerge. However, in many cases key resources
are not well-managed, or not managed at all. There are many small hints and clues to
isolating unmanaged resources in practical situations. Often the resources are intangible or soft,
so that it is difficult to discern the apparent resource condition. The desired condition or goal may itself not be
clear or appropriate. The resource in
development may be invisible. In the
case of People Express unmanaged resources include potential passengers,
service reputation and staff motivation.
A
rough classification of resources leads to the second step of analysing
dominant logic. This phase of analysis
is demanding but also interesting because it reveals the managerial rationale
for the firm's continuing resource accumulation strategy. Let's start with the tangible resources at
People Express. What is the dominant
logic of fleet expansion? Such strategic
investment decisions could be governed by funding constraints, market share
goals, return criteria, demand forecasts, or staffing constraints. The dominant logic at People Express however
appears (between the lines of the case and video) to be CEO Don Burr's
ambitious personal growth target, stemming from his vision of industry revolution embodied
in the precepts of the company. Clearly
such logic is both powerful and persistent.
The imposition of Burr's dominant logic leads to reinforcing feedback in
the resource stock of planes.
The
dominant logic of staff expansion is quite different. From the case one gathers the impression of a
Human Resource VP insistent on high-quality recruits, carefully filtered (with
input from the top management team) and trained on the job. The imposition of
this dominant logic leads to reinforcing feedback in which the resource stock
of experienced staff is the principal determinant of hiring.
The
dominant logic of passenger growth is also noteworthy at People Express. Customers are a vital resource stock for all
companies. Some companies explicitly
manage customers: by setting sales targets; tracking customers in huge
databases; and implementing marketing programmes to eliminate any gaps relative
to goal. Other companies don't really
actively manage the customer base, but instead allow it to evolve from
advertising, word-of-mouth and churn.
People Express seems to have adopted an ambitious but essentially
unmanaged approach to growth of customers.
Deep price discounts coupled to targeted advertising unleashed a
powerful word-of mouth effect that caused a very rapid build-up of potential
passengers (those fliers willing to try People Express should the opportunity
arise). The imposition of this dominant
logic embodies reinforcing feedback characteristic of word-of-mouth.
The
resulting tangible resource system contains three reinforcing feedback loops,
each a compelling engine of growth, but each operating seemingly independently
to produce autonomous expansion of planes, staff and passengers. Partial model simulations reveal the power of
these growth engines to underpin the kind of spectacular growth achieved by the
People Express in reality.
Resource System and Baffling Growth
Dynamics
The
third step of the dynamic resource-based analysis looks to the behaviour of the
intangibles (service reputation and motivation) to explain the demise of People
Express and (more importantly) the invisibility of the company's mounting
resource problems. From the case it
appears that neither service reputation nor staff motivation is managed. This
observation is no surprise when one considers that almost all the requirements
for active resource management (in figure 2) are absent: operating goals are
not clearly defined; and the apparent condition of the resource stocks is
unknown (how to do get inside the mind of the customer to measure service
reputation, or into the emotions of staff to discern motivation?). So reputation and motivation just evolve from
operating conditions. Motivation
responds to a range of dynamic factors such as company growth rate and
profitability and then goes on to influence staff productivity. Reputation
responds (with a time lag) to the balance of flying passengers and service
capacity, while service capacity itself is a complex dynamic mix of the number
and blend of experienced and newly-hired staff as well as staff
productivity.
When
the three tangible engines of growth are out of step (and it would only be an
accident if they were exactly co-ordinated, since their dominant logic is so
different), then problems begin to accumulate in the intangibles. No management action is taken to fix these
problems because: 1. the unmanaged intangibles provide only weak signals to
rest of the organisation of latent growth stresses; and 2. the powerful dominant logic governing
tangibles is insensitive to such weak signals.
This seeming paralysis in the face of impending doom is symptomatic of
management under conditions of dynamic complexity
As
figure 3 shows, service reputation declines steadily for the first six years in
an 8-year simulation of People's growth strategy (the apparent recovery in the
last two years results from an unintended abundance of staff as disillusioned
passengers switch to competing airlines).
Motivation (though invisible and beyond direct management) remains both
steady and high for the first six years, underpinning People's competitive cost
advantage. But as the customer base
saturates and then collapses, the excitement and profit-lure of a fast-growth
enterprise evaporates. Employees are demoralised. Planes fly
half-empty. The company dies with
a configuration of resources (both tangible and intangible) that is markedly
inferior to its major competitors. There is no commercially viable route of
recovery from this resource trap.
Figure
3: Time Behaviour Charts of Intangible
Resources: Service Reputation and Staff
Motivation
Implications of a Dynamic
Resource-Based View of the Firm
The
paper presents a dynamic resource-based view of the rise and fall of People
Express. At the heart of this view is a
synthesis of two powerful and influential sets of ideas from the strategy
field: 1. resource accumulation as a way of understanding firms' resource
endowments and enduring differences in firms' strategy and performance; and 2.
dominant logic as a way of understanding firm-specific traits of resource
management as they affect firm performance.
System
dynamics is a natural way to unite these ideas.
Stocks and flows portray resource accumulation, while information
feedback and policies embody dominant logic.
The stock/flow and policy framework provides a versatile means of
visualising firms' resource systems and (through simulation) for understanding
the dynamics of strategy as it arises from underlying resource management
policies.
The
framework throws-up new vocabulary and concepts for analysing strategy and
business dynamics. Firms are viewed as resource systems. Resources can be classified into
tangible-intangible and managed-unmanaged.
Patterns of resource accumulation (both effective and ineffective)
result from firms' dominant policy logic for managing resources. Strategies
(like People Express) where failure follows dramatic success can be explained
in terms of flawed dominant logic for managed resources (operating goals and
feedback information that is inadvertently at odds with overall strategy),
along with unintended accumulations of invisible or unmanaged resources that
interact with managed resources in unexpected (and usually detrimental) ways.
The
framework has the potential to be applied in any areas where the ideas of the
original (quasi-static) resource-based view and/or dominant logic have taken
root. This potential is particularly
exciting for those working in system dynamics, because the resource and
dominant logic 'paradigms' are to be found at the heart of mainstream strategy
in areas such as competitive strategy, diversification, corporate portfolio
management (joint ventures and acquisitions), and international strategy
(geographical diversification). Until
now, most firm-related system dynamics has (like People Express) focussed on
single businesses. A dynamic resource-based view opens the door to the
intriguing and dynamically complex world of the multi-business firm with the
possibility of model-based contributions to the dynamics of diversification,
transformation and internationalisation.
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