We study the effects of immigration on the diversity of consumption choices. Data from California in the 1990s indicate that immigration is associated with fewer stand-alone retail stores, and a greater number of large and in particular big-box retailers - evidence that likely contradicts a...

This paper addresses a longstanding puzzle involving the unbundling of services that has occurred over more than two decades in the U.S. advertising agency industry: How can the shift from the bundling to the unbundling of services be explained and what accounts for the slow pace of change?...

Multiproduct firms and product turnover are widespread phenomena. This paper develops a theoretical framework that links advantages in Ramp;D and variable costs with firm's ability to expand its portfolio of products. The framework is then applied to explain systematic differences in product...

Diversified firms have different values than comparable portfolios of single-segment firms. These value differences must be due to differences in either future cash flows or future returns. Expected security returns on diversified firms vary systematically with relative value. Discount firms...

Family-controlled pyramidal business groups were important in Canada early in the 20th century, amid rapid catch-up industrialization, but largely gave way to widely held free-standing firms by mid- century. In the 1970s and early 1980s – an era of high inflation, financial reversal,...