Investments in the US Science, Technology, Engineering, Medicine and Innovation (STEMI) enterprise come from many different sectors and their combined effect crucially enhances the nation's competitiveness. Philanthropy is an under-appreciated component of this ecosystem, providing $21.5 billion...

We study an endogenous growth model where a profit-motivated R and D sector coexists with the introduction of free blueprints invented by philanthropists. These goods are priced at marginal cost, contrary to proprietary ones which are produced by a monopoly owned by the inventor. We show that...