Bidding for network size: platform competition when quality and network size are complements

We study two platforms competing for members by investing in network quality. Quality is complementary to the network size: the marginal utility generated by an additional member increases with the network's quality. Platforms are imperfect substitutes: a share of the potential members are bi...

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Main Authors: Foucart, R, Friedrichsen, J
Format: Working paper
Published: University of Oxford 2013
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author Foucart, R
Friedrichsen, J
author_facet Foucart, R
Friedrichsen, J
author_sort Foucart, R
collection OXFORD
description We study two platforms competing for members by investing in network quality. Quality is complementary to the network size: the marginal utility generated by an additional member increases with the network's quality. Platforms are imperfect substitutes: a share of the potential members are biased toward each of the platforms and some are indifferent ex ante. We assume that, in case of multiple equilibria, consumers use the investment in quality as a coordination device. We find that, in equilibrium, platforms randomize over two disconnected intervals of investment levels, corresponding to competing for either the entire population or the mass of ex-ante different members. While the "prize" of winning the competition for members is identical for both platforms, the value of the outside option "not investing" depends on a platform's share of ex-ante biased members. The platform with the smallest share of ex-ante biased members bids more aggressively to compensate for its lower outside option and achieves a monopoly network with higher probability than its competitor.
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spelling oxford-uuid:e8faa07f-6ebb-4d3f-8082-97a6f13bfb6b2022-03-27T10:50:50ZBidding for network size: platform competition when quality and network size are complementsWorking paperhttp://purl.org/coar/resource_type/c_8042uuid:e8faa07f-6ebb-4d3f-8082-97a6f13bfb6bBulk import via SwordSymplectic ElementsUniversity of Oxford2013Foucart, RFriedrichsen, JWe study two platforms competing for members by investing in network quality. Quality is complementary to the network size: the marginal utility generated by an additional member increases with the network's quality. Platforms are imperfect substitutes: a share of the potential members are biased toward each of the platforms and some are indifferent ex ante. We assume that, in case of multiple equilibria, consumers use the investment in quality as a coordination device. We find that, in equilibrium, platforms randomize over two disconnected intervals of investment levels, corresponding to competing for either the entire population or the mass of ex-ante different members. While the "prize" of winning the competition for members is identical for both platforms, the value of the outside option "not investing" depends on a platform's share of ex-ante biased members. The platform with the smallest share of ex-ante biased members bids more aggressively to compensate for its lower outside option and achieves a monopoly network with higher probability than its competitor.
spellingShingle Foucart, R
Friedrichsen, J
Bidding for network size: platform competition when quality and network size are complements
title Bidding for network size: platform competition when quality and network size are complements
title_full Bidding for network size: platform competition when quality and network size are complements
title_fullStr Bidding for network size: platform competition when quality and network size are complements
title_full_unstemmed Bidding for network size: platform competition when quality and network size are complements
title_short Bidding for network size: platform competition when quality and network size are complements
title_sort bidding for network size platform competition when quality and network size are complements
work_keys_str_mv AT foucartr biddingfornetworksizeplatformcompetitionwhenqualityandnetworksizearecomplements
AT friedrichsenj biddingfornetworksizeplatformcompetitionwhenqualityandnetworksizearecomplements