465. Market failures
There is a range of market failures and here I
can only review a few. Perhaps the most perverse failure is when the two core
virtues of markets are destroyed: freedom and variety of choice and initiative,
and selecting out failures. Destruction of freedom occurs in monopolies
and in the command economies of large firms. Persistence of failures
occurs, for example, with large banks that are ‘too big to fail’, and in large
corporations where top managers are ‘too megalomaniac to fail’, impregnable and
intolerant to criticism, keeping failures hidden or propped up with internal
cross-subsidies.
A widely
known failure lies in so-called externalities, such as environmental
degradation and damage to health (negative externalities) and so-called public
goods, such as parks and street lighting (positive externalities).
One reason why they are difficult to include in markets is that they are non-excludable:
it is difficult to exclude users who do not pay. An example is roads, but here,
with toll roads one can restrict use to those who pay, at the cost of
constructing tollbooths at limited entry and exit points.
There is a
range of problems that violate the assumption in market theory of full
information and rationality, and independence between autonomous agents and
their choices and actions. In preceding items I discussed limits to
rationality, as in framing, and problems of herding, which yield
financial and other bubbles that burst, and in prisoners’ dilemmas in
which economic actors lock each other up in conduct that yields adverse effects
(as in too risky investments).
In
particular, there are problems of limited or asymmetric information. An
important case is the phenomenon of adverse selection. This arises
prominently in insurance, when risks are hard to judge by the insurer, such as
a risk of skiing, say. The people most at risk have the highest need for
insurance. Knowing this, the insurer could raise his premium, but then most
seekers of insurance drop out, leaving only the worse risks. The result is that
there is no price at which buyers and sellers can agree. Either the risk for a number
of cases or the premium is too high.
A
requirement for perfect competition is the absence of economies of scale,
by which larger firms produce more cheaply than small ones. In fact, such
effects are ubiquitous, in various forms, and they give an impulse to
concentration of markets in a small number of large firms that can limit competition.
On a global
scale, there are exploitation of labour and adverse economic and
societal structural effects on developing countries. National policies
for justice and human rights lack grip because multinationals are footloose,
able to migrate to where conditions are least restrictive. Corporations far
outrun the capability of governments to restrain them. Markets unleash forces
that can become impossible to control.
Another
adverse effect is that expectations on capital markets impose a short term
perspective, and a focus on the interests of shareholders, whereby long
term interests and public interests such as protecting the environment, are
neglected. Investors and managers squeeze too much from the firm, reducing
spending on innovation, to increase cash flow, which reduces innovative
capability.
In the
following item in this blog I will discuss the important problem of transaction
costs.
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