What assumptions do economists make to model monopolies
Only one firm in the market
Profit maximisers
High barriers to entry
SNP
What are the 4 barriers to entry
Legal barriers
Sunk costs
Economies of scale
Brand loyalty
Legal barriers examples
Patents
Copyrights
Trademarks
What are sunk costs
Money cant be recovered if a firm leaves the market. This deters firms from entering the market as there is a high cost of failure.
Eg advertising
What is a contestable market
A market with low barriers to entry and exit
Easy for new firms to enter