This paper studies monopoly extraction of a nonrenewable resource with the presence of a competitively supplied capacity constrained renewable substitute. The monopolist staves off the renewable supply when the latter becomes competitive and then lets the resource price jump up.

Spatial perspective implies a hyperbolic spatial discount rate. To the extent that discounting with respect to space and to time are analogous, this result provides further evidence that hyperbolic discounting is a good description of how we view the world.