Survey on Competing in Network Industries: Firm Strategies, Market Outcomes, and Policy Implications

We review the recent literature on market structure, firm strategies and public policy in network industries. In particular, we focus on the latest applied work, including case studies and empirical work as well as refinements of the established theoretical results. We group each set of results along two dimensions: Static (within-generation) and dynamic (across-generations).     

Trust over time in exchange relationships: Meta‐analysis and theory

A common premise in prior research is that trust increases over time in relationships. Through a meta‐analysis of 39 studies, we find that the bivariate correlation between trust and relationship duration (1) is on average positive and small, and (2) varies significantly across studies indicating the presence of unobserved moderators. We therefore build a theoretical framework to specify four different mechanisms—initial bias correction, change in relationship value, identification, and trust‐based selection—that may affect the development of trust. We then argue that the relative strength of these mechanisms should influence whether trust increases, remains constant, or decreases over time. © 2013 The Authors. Strategic Management Journal published by John Wiley & Sons Ltd.     

Are family‐friendly workplace practices a valuable firm resource?

We study the determinants and consequences of family‐friendly workplace practices (FFWP) using a sample of over 450 manufacturing firms in Germany, France, U.K., and U.S. We find a positive correlation between firm productivity and FFWP. This association disappears, however, once we control for a measure of the quality of management practices. We further find that firms with a higher proportion of female managers and more skilled workers, as well as well‐managed firms, tend to implement more FFWP. Conversely, a firm's environment does not have a significant impact on the FFWP it provides. © 2010 The Authors. Strategic Management Journal published by John Wiley & Sons, Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.     

Competition with Aftermarket Power When Consumers Are Heterogeneous

We study a model of competitive foremarkets and partly monopolized aftermarkets. We show that high aftermarket power prompts firms to engage in inefficiently aggressive below‐cost pricing in the foremarket. This inefficiency is driven by the presence of consumers with valuations below marginal cost. While for intermediate aftermarket power their presence leads to a competition‐softening effect, for high aftermarket power firms attract increasing numbers of unprofitable consumers by aggressively pricing below cost. For high aftermarket power, firms' equilibrium profits can therefore be decreasing in aftermarket power but are always higher than for low aftermarket power. If firms engage in price discrimination by bundling the foremarket and aftermarket goods or by reducing their aftermarket power, they avoid selling to unprofitable consumers but also reduce the competition‐softening effect. This decreases firms' equilibrium profits but increases consumer and social welfare.     

ICT and productivity: conclusions from the empirical literature

Innovation drives economic competitiveness and sustained long-term economic growth. Especially the emergence and intensive utilization of information and communication technologies (ICTs), which spawned the beginning of the digital economy two decades ago, heavily affected the opportunities and efficiency of how firms produce and provide goods and services. We provide an overview of the empirical literature on ICT and productivity and highlight the main results and methodological differences. The majority of studies indicates that the productivity effect of ICT is indeed positive and significant. However, methodological approaches of how to appropriately estimate the ICT effect matter. While aggregate and sectoral growth accounting exercises suggest stronger differences of the ICT effect between US and Europe, firm-level analyses suggest no significant country differences. Moreover, we shed light on the notion of ICT being a General Propose Technology (GPT) enabling further innovations. Most of the GPT evidence on ICT is found for the US, while evidence for European countries is harder to come by. However, more theoretical and empirical research is needed to better understand spillovers and externalities of ICT and how these technologies transform our economies.     

Static or Dynamic Efficiency: Horizontal Merger Effects in the Wireless Telecommunications Industry

Review of Industrial Organization - This paper studies five mergers in the European wireless telecommunication industry and analyzes their impact on prices and capital expenditures of both merging...     

Quant GANs: deep generation of financial time series

Modeling financial time series by stochastic processes is a challenging task and a central area of research in financial mathematics. As an alternative, we introduce Quant GANs, a data-driven model which is inspired by the recent success of generative adversarial networks (GANs). Quant GANs consist of a generator and discriminator function, which utilize temporal convolutional networks (TCNs) and thereby achieve to capture long-range dependencies such as the presence of volatility clusters. The generator function is explicitly constructed such that the induced stochastic process allows a transition to its risk-neutral distribution. Our numerical results highlight that distributional properties for small and large lags are in an excellent agreement and dependence properties such as volatility clusters, leverage effects, and serial autocorrelations can be generated by the generator function of Quant GANs, demonstrably in high fidelity.     

Follow the Crowd or Follow the Trailblazer? The Differential Role of Firm Experience in Product Entry Decisions in the US Video Game Industry

Firms take cues from their external environment under uncertainty and imitate the actions of others. However, a firm’s own experience may either substitute for these external clues because the firm can evaluate uncertain situations more accurately, or it may complement them because the firm can act more successfully on the external cues. We argue that the type of external cues determines which of the two holds in the context of product entry decisions into market niches. If firms observe a large wave of entrants, own experience conveys more information than the imprecise signal of a mass of other firms. Conversely, if firms observe trailblazers, i.e., highly successful and influential products in a niche, own experience can help firms develop a strategy as a fast follower in a growing niche. We expect the supporting role of own experience in following trailblazers to be especially pronounced in niches that have not been discovered by a large mass of other firms. We study and test our hypotheses in the context of the US PC video game industry between 1991 and 2010 and find support for both the substitutive relationship between own experience and niche popularity and the complementary relationship of own experience and niche trailblazers. However, support for the complementary relationship is limited to less populated niches.