An inductive procedure is adopted to evaluate the behaviour of a multiproduct profit seeking monopolist vis à vis that of a social planner, in a model where there is a continuum of consumers characterized by different marginal willingness to pay for the quality. When the market is completely...

We analyse trade in vertically differentiated goods between a rich and a poor country. In autarky two monopolists, selling a single product, operate in two countries which differ only for their per capita income. If trade opens, the firm operating in the poor country exports to the rich, giving...

We investigate positional effects in a vertically differentiated duopoly, evaluated against the first best. Positional concerns distort the allocation of consumers across varieties, as well as the average quality. If the external effect is sufficiently relevant, the resulting welfare loss is...

The consequences of the adoption of quality standards on the endogenous timing of moves are investigated in a vertically differentiated duopoly. We obtain two main results. First, we prove that, when the low-quality firm is Stackelberg leader in the quality stage, the related MQS is ineffective....