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Common Ownership and Market Entry: Evidence from Pharmaceutical Industry

Melissa Newham, Jo Seldeslachts () and Albert Banal-Estanol ()

No 1738, Discussion Papers of DIW Berlin from DIW Berlin, German Institute for Economic Research

Abstract: Common ownership - where two firms are at least partially owned by the same investor - and its impact on product market outcomes has recently drawn a lot of attention from scholars and practitioners alike. Theoretical and empirical researchsuggests that common ownership can lead to higher prices. This paper focuses on implications for market entry. To estimate the effect of common ownership on entry decisions, we focus on the pharmaceutical industry. In particular, we consider the entry decisions of generic pharmaceutical firms into drug markets opened up by the end of regulatory protection in the US. We first provide a theoretical framework that shows that a higher level of common ownership between the brand firm (incumbent) and potential generic entrant reduces the generic's incentives to entry. We provide robust evidence for this prediction. The effect is large: a one-standard-deviation increase in common ownership decreases the probability of generic entry by 9-13%. We extend our basic theoretical framework and allow for multiple entrants. Our model shows that for sufficiently high levels of common ownership, the classical idea of entry decisions being strategic substitutes can be reversed into being strategic complements. Our empirical results provide some support for these predictions.

Keywords: Market entry; ownership structure; pharma (search for similar items in EconPapers)
JEL-codes: G23 K21 L11 L41 L65 (search for similar items in EconPapers)
Date: 2018
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Related works:
Working Paper: Common Ownership and Market Entry: Evidence from the Pharmaceutical Industry (2018) Downloads
Working Paper: Common Ownership and Market Entry: Evidence from the Pharmaceutical Industry (2018) Downloads
Working Paper: Common ownership and market entry: Evidence from the pharmaceutical industry (2018) Downloads
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