Investment in a Growth Model of Non-Excludable Aggregate Capital

We study the effect of investment on the dynamics of aggregate capital when different sectors of the economy compete strategically for the utilization of non-excludable capital to produce both consumption and investment goods. We consider two types of investment goods: complements and substitutes. For each case, we derive the equilibrium and provide the corresponding stationary distribution. We then compare the equilibrium with the social planner’s optimal solution