We construct a model of firm dynamics with heterogeneous productivity and distortions. The productivity distribution evolves endogenously as the result of the decisions of firms seeking to upgrade their productivity over time. Firms can adopt two strategies toward that end: imitation and...

This paper proposes a dynamic politico-economic theory of debt, government finance and expenditure. Agents have preferences over a private and government-provided public good, financed through labour taxation. Subsequent generations of voters choose taxation, government expenditure and debt...