7. Markets and market structures

Economists classify markets according to conditions that prevail in them. They ask questions like the following: How many supplies are there? How large are they? Do they have any influence over price? How much competition is there between firms? What kind of economic product is involved? Are all firms in the market selling exactly the same product, or simply similar one? Is it easy or difficult for new firms to enter the market? The answer to these questions helps to determine market structure, or the nature and degree of competition among firms operating in the same market. For example, one market may be highly competitive because a large number of firms produce similar products. Another may be less competitive because of fewer firms, or because the products made by each are different or unique.

In short, markets can be classified according to certain structural characteristics that are shared by most firms in the market. Economists have names for these different market structures: pure competition¹, monopolistic competition², oligopoly, and monopoly.

An important category of economic markets is pure competition. This is a market situation in which there are many independent and well-informed buyers and sellers of exactly the same economic products. Each buyer and seller acts independently. They depend on forces in the market to determine price. If they are not willing to accept this price, they do not have to do business.

To monopolize means to keep something for oneself³. A person who monopolized a conversation, for example, generally is trying to stand out from⁴ everyone else and thus attract attention⁵.

A situation much like this often exists in economic markets. For example, all the conditions of pure competition may be met except that the products for sale are not exactly the same. By making its product a little different, a firm may try to attract more customers and take over the economic market⁶. When this happens, the market situation is called monopolistic competition.

The one thing that separates monopolistic competition from pure competition is product differentiation⁷. The differences among the products may be real, or imaginary. If the seller can differentiate a product, the price may be raised a little above the market price, but not too much.

The term market, as used by economists, is an extension of the ancient idea of a market as a place where people gather to buy and sell goods. In former days part of a town was kept as the market or marketplace, and people would travel many kilometres on special market-days in order to buy and sell various commodities.

Today, however, markets such as the world sugar market, the gold market¹ and the cotton market do not need to have any fixed geographical location. Such a market is simply a set of conditions permitting buyers and sellers to work together.

In a free market², competition takes place among sellers of the same commodity, and among those who wish to buy that commodity. Such competition influences the prices prevailing in the market. Prices inevitably fluctuate, and such fluctuations are also affected by current supply and demand.

Whenever people who are willing to sell a commodity contact people who are willing to buy it, a market for that commodity is created. Buyers and sellers may meet in person, or they may communicate in some other way: by telephone or through their agents. In a perfect market, communications are easy, buyers and sellers are numerous and competition is completely free. In a perfect market there can be only one price for any given commodity: the lowest price which sellers will accept and the highest which consumers will pay. There are, however, no really perfect markets, and each commodity market³ is subject to special conditions. It can be said, however, that the price ruling in a market indicates the point where supply and demand meet.

Although in a perfect market¹ competition is unrestricted and sellers are numerous, free competition² and large numbers of sellers are not always available in the real world. In some markets there may only be one seller or a very limited number of sellers. Such a situation is called a monopoly, and may arise from a variety of different causes. It is possible to distinguish in practice four kinds of monopoly.

State planning and central control of the economy often mean that a state government has the monopoly of important goods and services. Some countries have state monopolies in basic commodities like steel and transport, while other countries have monopolies in such comparatively unimportant commodities as matches. Most national authorities monopolize the postal services within their borders.

A different kind of monopoly arises when a country, through geographical and geological circumstances, has control over major natural resources or important services, as for example with Canadian nickel and the Egyptian ownership of the Suez Canal. Such monopolies can be called natural monopolies³.

They are very different from legal monopolies, where the law of a country permits certain producers, authors and inventors a full monopoly over the sale of their own products.

These three types of monopoly are distinct from the sole trading opportunities which take place because certain companies have obtained complete control over particular commodities. This action is often called «cornering the market»⁴ and is illegal in many countries. In the USA anti-trust laws operate to restrict such activities, while in Britain the Monopolies Commission examines all special arrangements and mergers⁵ which might lead to undesirable monopolies.

8. Money

Basically, money is what money does. This means that money can be any substance¹ that functions as a Medium of Exchange, a Measure of Value, and a Store of Value.

As a medium of exchange, money is something generally accepted as² payment³ for goods and services

As a measure of value, money expresses worth in terms that most individuals understand.

Money also serves as a store of value. This means goods or services can be converted into⁴ money that is easily stored until some future time.

The different forms of money are in use in the United States today. The most familiar are coin and currency. The term coin refers to metallic forms of money. The term currency refers to paper money issued by government. While money has changed in shape, kind or size over the years, modern money still shares many of the same characteristics of primitive money. Modern money is very portable⁵ when people carry checkbooks. For example, they really are carrying very large sums of money since checks can be written in almost any amount.

Modern money is very durable⁶. Metallic coins last a long time under normal use⁷ and generally do not go out of circulation⁸ unless they are lost. Paper currency also is reasonably durable. Modern money also rates high in divisibility⁹. The penny which is the smallest denomination of coin¹⁰, is more than small enough, for almost any purchase. In addition, checks almost always can be written for the exact amount. Modern money, however, is not as stable in value. The fact, that the money supply¹¹ often grew at a rate 10 to 12 per cent a year was considered as major cause of inflation.