This paper attempts to analyze the competitive implications of horizontal mergers that happened in the Korean mobile telecommunications market. A big increase in the concentration index after the mergers and acquisitions is often interpreted as evidence that competition in the Korean mobile...

It has been incessantly argued that the level of mobile charges and the resulting portion of communication expenditure over household expenditure are too high, which implies that despite the growth of the mobile market, the performance of competition is problematic and some works for...

Bundling, beneficial in the sense that it increases consumers' surplus and offers an opportunity for a new source of revenues to operators, could be exploited as a tool of leveraging market power into new service market. The bundling in this context, has been prohibited until criteria for...

In order to compare the telecommunication service prices of the member countries, OECD announces biannually country rankings of the best offer prices calculated using representative user baskets definition. Whereas the existing criticisms on such OECD price index focused mainly on the...

The author reexamines the Schmalensee effect from a dynamic perspective. Schmalsensee’s argument suggesting that high quality can be signaled by high prices is based on the assumption that higher quality necessarily incurs higher production cost. In this paper, the author argues that firms...

In this paper, we consider two firms diffusing incompatible technologies and their decision of consumer targeting. The technology adoption is made in two steps. First, once the firms sell their products to their respective targeted consumer, the technology is diffused successively by...

The author reexamines the Schmalensee effect from a dynamic perspective. Schmalsensee's argument suggesting that high quality can be signaled by high prices is based on the assumption that higher quality necessarily incurs higher production cost. In this paper, the author argues that firms...

The authors reexamine the Schmalensee effect from a dynamic perspective. Schmalsensee's argument suggesting that high quality can be signaled by high prices is based on the assumption that higher quality necessarily incurs higher production cost. In this paper, the authors argue that firms...

Abstract I analyze a model of patent races for COVID-19 vaccines under alternative liability rules. The first inventor of the vaccine gets the monopoly rent, but must assume full liability from its side effects. In this model, firms choose two kinds of investments, one for inventing a vaccine...