Early adoption of artificial intelligence (AI) reshaped how firms responded to market dynamics by enhancing data collection and analysis. Linking China's universe of customs shipments to millions of online job ads, we tracked AI hiring in sales, marketing, and analytics to build a firm-level...

Platforms that provide product recommendations to consumers, such as marketplaces like Amazon or online travel agencies like Expedia, govern a substantial part of transactions in many markets. In addition to selling via platforms, most firms, however, also operate a direct channel. This paper...

Firms often choose with whom to compete and how similar or how different their products should be relative to those of their rivals. This paper investigates this issue in the app economy by studying the determinants of mobile app success. We leverage natural language processing and unsupervised...

We study information design in a vertically differentiated market. A third party publicly discloses information about the product qualities of two competing firms. More precise information improves consumer matching but increases perceived differentiation, enabling firms to raise prices....

This paper studies self-preferencing in search results and how it affects quality competition in the U.S. Apple App Store. Leveraging a search algorithm change, I find that rankings significantly affect app demand and developers’ quality provision. To examine the welfare effects of...

This paper extends the CES model of monopolistic competition to the case where varieties are both horizontally and vertically differentiated. A distinctive feature of our model is the presence of a network externality, which operates through the number of varieties available at each quality...

Can a recession have a positive, long-term impact on firm innovation? A downturn represents an opportunity for firms to learn from their peers and try to understand the main drivers of resilience. If they deem R&D capital one of them, they may raise innovation in the following years, in order to...

This paper extends the CES model of monopolistic competition to the case where varieties are both horizontally and vertically differentiated. A distinctive feature of our model is the presence of a network externality, which operates through the number of varieties available at each quality...

This paper introduces a novel ratio-based framework for analyzing how consumer heterogeneity translates into product differentiation in vertically structured monopoly markets. We consider a monopolist facing a continuum of consumers and a strictly convex production cost function and identify...

This paper incorporates non-homothetic preferences and the product quality ladder assumption into a model of heterogeneous multi-product firms from the perspective of scale and quality to investigate the differential impact of domestic demand upgrading on firm resource reallocation and export...

We experimentally investigate exclusive-offer competition between two existing upstream firms. In theory, when upstream firms make exclusive offers to a downstream monopolist, both exclusion and non-exclusion can be equilibrium outcomes. By varying key parameters, we explore how bargaining power...

This paper investigates the impact of services sector liberalization on product innovation of downstream manufacturing firms. Leveraging firm-product panel data from India and employing a shift-share research design, I find that services liberalization significantly increases firms’ product...

This paper studies biased-manager hiring in a market with network externalities and product compatibility. We show that the aggressivity of a biased manager has a non-linear relationship with product compatibility; however, since both owners want to hire aggressive managers, product...

The rising prevalence of greenwashing by firms has emerged as a major concern for regulatory authorities over the past decade. This paper examines the impact of regulation on firms' strategic decisions regarding greenwashing and environmental quality in an oligopolistic market. We model two...

We investigate the impact of an environmental award in a Bertrand duopoly with green consumers considering a three-stage game. First, the regulator designs the environmental contest. Second, firms choose their green investments, and the winner of the contest is awarded. Third, firms compete in...

We investigate the impact of an environmental award in a Bertrand duopoly with green consumers considering a three-stage game. First, the regulator designs the environmental contest. Second, firms choose their green investments, and the winner of the contest is awarded. Third, firms compete in...

How do environmental information and awareness interact to improve environmental quality by changing consumer behavior and firm strategies? This article provides theoretical insights using an original differentiation model within a general framework whose specific cases have been studied...

This paper provides a simple unified discrete-choice framework for analyzing differentiated duopolies. This framework nests models of horizontal and vertical differentiation, including standard textbook models (Hotelling and Shaked-Sutton). Contrary to these models, it also applies to economic...