Here is a copy of Table 10.1 from the textbook. This table describes some of the fundamental elements of the four major market models: pure competition, monopolistic competition, oligopoly, and pure monopoly. Like a lot of things in economics, one or more of these market models may exist only in theory. Others, like oligopolies, are quite common.

Characteristic	Pure Competition	Monopolistic Competition	Oligopoly	Pure Monopoly
Number of firms	A very large number	Many	Few	One
Type of product	Standardized	Differentiated	Standardized or differentiated	Unique; no close substitutes
Control over price	None	Some, but within rather narrow limits	Limited by mutual interdependence; considerable with collusion	Considerable
Conditions of entry	Very easy, no obstacles	Relatively easy	Significant obstacles	Blocked
Nonprice competition	None	Considerable emphasis on advertising, brand names, trademarks	Typically a great deal,particularly with product differentiation	Mostly public relations advertising
Examples	Agriculture, commodities like gold or silver - the stock market (NYSE)	Retail trade, dresses, lots of companies	Steel, automobiles, farm shoes implements, many household appliances	Local utilities, most parts of Government

Can you think of industries that operate in each of these four market models? What about the airlines? Auto makers? Software companies? Mobile phone carriers? Mobile phone makers? Uber? Google? Ford? Walmart? Snapchat? Or do some of the above market models exist only in theory?

Is there an industry in the town where you live (say retail food) that operates in the pure competition market model? Or another example?