We study welfare effects of horizontal mergers under a successive oligopoly model and find that downstream mergers can … increase welfare if they reduce input prices. The lower input price shifts some input production from cost- inefficient … conditions for a reduction in input prices and welfare-improving horizontal mergers under a general demand function. Qualitative …

Letters, 124: 122-126) show that in a vertically related market Cournot competition yields higher social welfare compared to … of input they purchase. We show that the welfare ranking may be reversed once we introduce a nonnegativity constraint on …

If an additional competitor reduces output per firm in a homogenous Cournot-oligopoly, market entry will be excessive … the excessive entry prediction. Tax evasion raises the number of firms in market equilibrium and can alter their welfare … the direct welfare consequences of tax evasion and the relationship between evasion and the tax base. We also determine …

Trade unions are often argued to cause allocative inefficiencies and to lower welfare. We analyze whether this … evaluation is also justified in a Cournot-oligopoly with free but costly entry. If input markets are competitive and output per … firm declines with the number of firms (business stealing), there is excessive entry into such oligopoly. If trade unions …