Lab

The Natural Monopoly Graph

The graph shows one firm whose average total cost falls at every quantity buyers would demand, with a constant marginal cost below it. Name the two downward-sloping lines and title both axes first. Then drag the round point to the price and quantity the situation asks for: the firm's own choice, or the price a regulator sets.

Challenges

  1. Compare the price with ATC at your point. Does the firm earn an economic profit?
  2. Why would a second firm, splitting the market, have a higher average total cost?
  3. Where on this graph is the deadweight loss of the firm's choice?
  4. At the price a regulator sets for the allocatively efficient quantity, compare the price with ATC. What does the firm need to keep producing there?

Topics this lab supports