Perfect competition
Market with many buyers and sellers
Monopolistic competition
Imperfect competition with many firms
Oligopoly
Imperfect competition among a few firms
Duopoly
2 firms
Monopoly
1 firm
Market share
Proportion of sales in a market
Hit and run entry
When firms renter a market to make ecnomics profit and leave once it’s been competed away
Competition policy
Aimed to reducing monopoly power in order to protect consumers
Competition policy
Policy that the government uses to promote competition in market and protect consumer by preventing abuses of market power
E.g regulation, subsidies reducing regulation and increasing licenses