Competition for access; spectrum rights and downstream access in wireless telecommunications

We analyse downstream access and capacity choice in the market for wireless telecommunications, where spectrum rights are owned by vertically integrated duopolists and may be traded. In the market for wireless telecommunications, radio spectrum is an essential input. Prior to network construction, the incumbents may offer contracts for capacity to an entrant, granting service-based access on the network they will construct. Alternatively, when spectrum trading is allowed, they may sell part of their license, allowing the entrant to build its own network and enter as an infrastructure player. We find that in this Cournot setting, access is generally provided, as incumbents compete to appropriate the profits of serving a differentiated market through the entrant. Although selling spectrum rights instead of network capacity leads to a loss of economies of scale in infrastructure construction, infrastructure-based entry may dominate as a result of a strategic effect. By delegating capacity choice to the entrant, the access providing incumbent can commit to compete more aggressively, causing its rival incumbent to reduce capacity. A lower aggregate capacity will increase prices and thereby profits.

Four Futures for Finance; A scenario study

This document presents four scenarios for the future of finance. The goal of our study is to imagine the future of finance and to identify challenges faced by policymakers in fighting systemic risk. It builds upon a tradition within the CPB to develop scenarios for policy analysis. We develop four scenarios for the future of finance. Our scenarios differ in two dimensions. First, to what extent soft information lies at the core of banks’ business. Second, to what extent scope economies exist between different banking activities. By combining these two dimensions, we obtain four scenarios: Isolated Islands, Big Banks, Competing Conglomerates, and Flat Finance. Market structure, market failures, and government failures vary between scenarios. These differences then translate into differences in the complexity of balance sheets, the ability to coordinate policy internationally, the information gap faced by regulators, the size of banks’ balance sheets, the tradability of banks’ assets, the level of interconnectedness, the potential for market discipline, and the threat of regulatory capture. As a result, each scenario calls for a different set of policies to combat systemic risk.

Systemic risk across sectors; Are banks different?

This research compares systemic risk in the banking sector, the insurance sector, the construction sector, and the food sector. To measure systemic risk, we use extreme negative returns in stock market data for a time-varying panel of the 20 largest U.S. firms in each sector. We find that systemic risk is significantly larger in the banking sector relative to the other three sectors. This result is robust to separating out correlations with an economy-wide stock market index. For the non-banking sectors, the ordering from high to low systemic risk is: insurance sector, construction sector, and food sector. The difference between the insurance sector and the construction sector is no longer significant after correcting for correlations with the economy as a whole. The correction has a large effect for the banking sector and the insurance sector, and a smaller effect for the other two sectors.

Opportunistic competition law enforcement

We analyse the interplay between investigation policies, deterrence and desistance in a model where a competition authority monitors multiple sectors and faces a budget constraint that prevents it from deterring cartels in all sectors simultaneously. Most studies of competition law enforcement treat competition authorities as all-knowing, unwavering and benevolent. They do not behave opportunistically, do not face asymmetric information and choose their actions to optimize social welfare. In this paper, we drop one of these assumptions, and study a competition authority that can not commit to a particular investigation strategy. As a consequence, a competition authority’s decisions to investigate will be driven by the (ex-post) desistance effect instead of the (ex ante) deterrence effect of an investigation policy. The resulting opportunistic behaviour may lead to a suboptimal investigation strategy. We find that, in the absence of commitment, developing a sector specific reward scheme based on the number of captured cartels can improve welfare.

Competition for traders and risk

The financial crisis has been attributed partly to perverse incentives for traders at banks and has led policy makers to propose regulation of banks' remuneration packages. We explain why poor incentives for traders cannot be fully resolved by only regulating the bank's top executives, and why direct intervention in trader compensation is called for. We present a model with both trader moral hazard and adverse selection on trader abilities. We demonstrate that as competition on the labour market for traders intensifies, banks optimally offer top traders contracts inducing them to take more risk, even if banks fully internalize the costs of negative outcomes. In this way, banks can reduce the surplus they have to offer to lower ability traders. In addition, we find that increasing banks' capital requirements does not unambiguously lead to reduced risk-taking by their top traders.

Systemic risk in the financial sector; a review and synthesis

In a financial crisis, an initial shock gets amplified while it propagates to other financial intermediaries, ultimately disrupting the financial sector. We review the literature on such amplification mechanisms, which create externalities from risk taking. We distinguish between two classes of mechanisms: contagion within the financial sector and pro-cyclical connection between the financial sector and the real economy. Regulation can diminish systemic risk by reducing these externalities. However, regulation of systemic risk faces several problems. First, systemic risk and its costs are difficult to quantify. Second, banks have strong incentives to evade regulation meant to reduce systemic risk. Third, regulators are prone to forbearance. Finally, the inability of governments to commit not to bail out systemic institutions creates moral hazard and reduces the market’s incentive to price systemic risk. Strengthening market discipline can play an important role in addressing these problems, because it reduces the scope for regulatory forbearance, does not rely on complex information requirements, and is difficult to manipulate.

Selective contracting and foreclosure in health care markets

This paper provides an analysis of exclusive contracts between health care providers and insurers in a model where some consumers choose to stay uninsured. In case of a monopoly insurer, exclusion of a provider changes the distribution of consumers who choose not to insure. Although the foreclosed care provider remains active in the market for the non-insured, we show that exclusion leads to anti-competitive effects on this non-insured market. As a consequence exclusion can raise industry profits, and then occurs in equilibrium. Under competitive insurance markets, the anticompetitive exclusive equilibrium survives. Uninsured consumers, however, are now not better off without exclusion. Competition among insurers raises prices in equilibria without exclusion, as a result of a horizontal analogue to the double marginalization effect. Instead, under competitive insurance markets exclusion is desirable as long as no provider is excluded by all insurers.

Competition and access price regulation in the broadband market

We construct a model for differentiated Cournot competition between service-based and infrastructure-based firms, out of which one infrastructure-based firm (the incumbent) supplies to the service-based firms. We seek for and compare the socially optimal and the incumbent’s profit maximizing access price in two scenarios: (i) service-based firms and incumbent supply homogeneous services (partial differentiation), and (ii) all services are horizontally differentiated (uniform differentiation). We show that in both cases the incumbent never forecloses service-based firms if infrastructure-based competition is present or if services are somewhat differentiated. Under uniform differentiation the welfare optimizing access price is below marginal cost, hence the incumbent subsidizes the production of service-based firms and makes zero profit. In the case of partial differentiation, the same result obtains when both markets are concentrated. However, if markets are not concentrated, the socially optimal access fee exceeds the marginal cost.

Vertical relationships between health insurers and healthcare providers

The current institutional reforms in the Dutch healthcare sector may increase the extent of vertical relations (such as vertical contracts and vertical integration) between insurers and healthcare providers. Vertical relations may have both welfare increasing and welfare reducing effects. In this study, we focus on the latter, in particular on anticompetitive foreclosure. We distinguish three possible mechanisms that may lead to anticompetitive foreclosure, called respectively 'exclusivity', 'sabotage', and the 'waterbed effect'. We discuss under which conditions they come into play and which policy measures can prevent them.

Competition leverage: How the demand side affects optimal risk adjustment

In this paper, the authors study optimal risk adjustment in imperfectly competitive health insurance markets when high-risk consumers are less likely to switch insurer than low-risk consumers. First,�they find that insurers still have an incentive to select even if risk adjustment perfectly corrects for cost differences among consumers. Consequently, the outcome is not efficient even if cost differences are fully compensated. To achieve first best, risk adjustment should overcompensate for serving high-risk agents to take into account the difference in markups among the two types. Second, the difference in switching behavior creates a trade�off between efficiency and consumer welfare. Reducing the difference in risk adjustment subsidies to high and low types increases consumer welfare by leveraging competition from the elastic low-risk market to the less elastic high-risk market. Finally, mandatory pooling can increase consumer surplus even further, at the cost of efficiency.