This paper shows how a monopolist generally can increase its profits by offering a discount on its monopolized product if the customer agrees to buy a competitively supplied good from it at a price premium. The use of bundling to leverage market power has a long (and checkered) history in law...

We consider a heretofore unexplored explanation for why platforms, such as Internet service providers, might impose download limits on content consumers: doing so increases the degree to which those consumers view content providers products as substitutes. This, in turn, intensifies competition...

The so-called excess-entry theorem (Mankiw and Whinston 1986, Suzumura and Kiyono, 1987) establishes conditions guaranteeing that more firms enter a homogeneous Cournotoligopoly in equilibrium than a benevolent government prefers. We generalise the approach and analyse the behaviour of a...

We study a two-sided market where a platform attracts firms selling differentiated products and buyers interested in those products. In the unique subgame perfect equilibrium of the game, the platform fully internalizes the network externalities present in the market and firms and consumers all...

We examined the effect of a rating system on sellers' entry into and exit from platform markets with monopolistic competition. We explicitly introduced a parameter for rating accuracy and analyzed sellers with varying product qualities by introducing a logit-type monopolistic competition. We...

This note compares monopoly equilibrium outcomes with those of duopoly when firms price their products with two-part tariffs. Although a monopolistic firm never charges a lower marginal price than imperfectly competitive firms, it sets a lower entry fee under certain market conditions. In turn,...

We discuss the case of a monopolist of a base good in the presence of a complementary good provided either by it or by another firm. We assess and calibrate the extent of the influence on the profits from the base good that is created by the existence of the complementary good. We establish an...

In digital markets, big technology firms like Google, Microsoft, Amazon, etc., compete with each other across multiple markets. Some markets are platforms/two-sided with products offered for free to users, whereas other markets are one-sided with paid products. In some cases, market competition...

In many cases, collusive agreements are formed by asymmetric firms and include only a subset of the firms active in the cartelized industry. This paper endogenizes the process of cartel formation in a numeric simulation model where firms differ in marginal costs and production technologies. The...

The paper tackles the discussion about vertical separation in the electronic communications sector, in its two main forms functional and structural. The author will argue how mandatory structural separation under certain conditions could be a possible option. The evidence is provided by the...