Análise de concentração e poder de mercado no setor de banda larga no estado do Ceará (2013 a 2018)

Abstract

The Brazilian internet fixed broadband industry, since the begining, has been constantly evolving. Ultil the year 2016, five companies dominated the industry: OI, GVT, BRISANET, MULTIPLAY and CLARO. In march 2016, the GVT brand ceases to exist after being purchased by VIVO. In this sense, since merger and acquisitions generate competitive concerns, for the analysis of the impacts caused by the acquisition of GVT by VIVO, the Cournot model was used, which allows an analysis of the market concentration levels, through the Herfindahl-Hirschman index, and market power, through the Lerner index. During the period of the acquisition of GVT by VIVO, there was no increase in market power, which remained at the same value, 0.1024. There is also a greater diversification in the market, as other companies have more expressive participation. Given the upward trajectory of another company, BRISANET, a counterfactual analysis was carried out, simulating the broadband market without its presence. In the market without the presence of BRISANET, the calculated market power was 0.0877, about 17.16 % higher than that calculated in the market with the presence of BRISANET, 0.0748.