Globalization, by raising the number of buyers available to each seller and the number of sellers available to each buyer, raises the thickness, or the effective number of participants, of every market. Market thickness can have subtle effects on incentives and organizations, alleviating hold-up...

We characterize the product line choice and pricing of a monopolist from the upper envelope of net marginal revenue curves to the individual product demand functions. The equilibrium product line constitutes those varieties yielding the highest upper envelope. In a generalized vertical...