Imagine a market where there is perfect competition between two or more companies, such as a fish market where vendors offer the same products at the same price or online ticket auctions like StubHub. In this market there are four key elements to perfect competition: a large number of buyers and sellers, no barriers to entry or exit, perfect mobility for customers choosing products and homogenous products.
Explain how output, price, and profit are determined in your perfectly competitive market in the long run.
How does that lead to efficiency?
How could changes in technology affect the market?
How could an increase in demand affect the market?
What are the effects of new businesses entering the market?
What are the effects of businesses leaving the market?