Jeanjean, F. (2020). Impact of Technical Progress on the Relationship between Competition and Investment. Journal of Industry, Competition and Trade, 21, 81-101.
https://doi.org/10.1007/s10842-020-00341-5

has been cited by the following article:

• TITLE: Co-Investment in the Sharing of Telecommunications Infrastructures

  AUTHORS: François Jeanjean

  KEYWORDS: Mobile Telecommunications, Network Sharing, Competition, Consumer Welfare

  JOURNAL NAME: Theoretical Economics Letters, Vol.12 No.5, September 30, 2022

  ABSTRACT: This paper studies the effects of infrastructure sharing agreements on telecommunications markets. Using a theoretical two stage game model with an investment stage and a competition stage where firms compete “à la Cournot”, I find that, infrastructure sharing agreements increase investment at industry level. Indeed, the sharing of infrastructures reduces costs of investment for involved operators and encourages them to invest more. This holds except if involved operators are much less efficient than their competitors (i.e., they have much higher marginal costs before investment). Furthermore, infrastructure sharing agreements generally increase both investments and consumer surplus, except if involved operators are much less efficient than their competitors or if they have very different level of efficiency. The infrastructure sharing agreement is even more effective when the most efficient operators are involved.