We introduce a new measure of competition: the elasticity of a firm's profits with respect to its cost level. A higher value of this profit elasticity (PE) signals more intense competition. Using firm-level data we compare PE with the most popular competition measures such as the price cost...

Theoretical IO models of horizontal mergers and acquisitions make the critical assumption of efficiency gains. Without efficiency gains, these models predict either that mergers are not profitable or that mergers are welfare reducing. A problem here is the empirical observation that on average...

Many observers have voiced concerns that standards create essentiality and thus monopoly power for the holders of standard essential patents (SEPs). To address these concerns, Lerner and Tirole (2015) advocate structured price commitments, whereby SEP holders commit to the maximum royalty they...

In a model where patients face budget constraints that make some treatments unaffordable, we ask which treatments should be covered by universal basic insurance and which by private voluntary insurance. We argue that both cost effectiveness and prevalence are important if the government wants to...

This paper analyzes optimal procurement mechanisms in a setting where the procurement agency has incomplete information concerning the firms’ cost functions and cares about quality as well as price. Low type firms are cheaper than high type firms in providing low quality but more expensive...

In countries like the US and the Netherlands health insurance is provided by private firms. These private firms can offer both individual and group contracts. The strategic and welfare implications of such group contracts are not well understood. Using a Dutch data set of about 700 group health...

Contracts between health insurers and providers are private; i.e. not public. By modelling this explicitly, we find the following. Insurers with bigger provider networks, pay higher fee-for-service rates to providers. This makes it more likely that a patient is treated and hence health care costs...

This paper compares the welfare effects of three ways in which health care can be organized: no competition (NC), competition for the market (CfM) and competition on the market (CoM) where the payer offers the optimal contract to providers in each case. We argue that each of these can be optimal...

For many goods (such as experience goods or addictive goods), consumers' preferences may change over time. In this paper, we examine a monopolist's optimal pricing schedule when current consumption can affect a consumer's valuation in the future and valuations are unobservable. We assume that...

This paper shows that it is possible for intermediate goods to be priced above the value that the good has final consumers. This happens in sectors selling to adverse selection markets where the cost difference between consumer types is dominated by their elasticity difference. High input prices...