Multiplant Firms and Innovation Adoption and Diffusion

A new theoretical explanation is provided for the empirical observation that large firms usually adopt sooner, although there are notable exceptions. The analysis focuses on the adoption of an innovation of uncertain profitability by a large firm with two plants and a small firm with one. Marginal production costs are increasing in each plant, and economies of multiplant operation are possible. These have conflicting effects on the incentive to adopt. The large firm benefits more from adopting a success. However, if an adopter must shut down a plant to learn about the innovation, the loss of multiplant economies reduces the large firmʹs incentive to adopt. Absent multiplant economies, the large firm is more likely to lead a diffusion because its greater return from a success dominates. However, the small firm is more likely to lead a diffusion if there are multiplant economies and the large firmʹs learning cost disadvantage dominates.