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Optimal Service Speeds in a Competitive Environment

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  • Ehud Kalai

Abstract

This is a study of the economic behavior of vendors of service in competition. A simple model with two competing exponential servers and Poisson arrivals is considered. Each server is free to choose his own service rate at a cost (per time unit) that is strictly convex and increasing. There is a fixed reward to a server for each customer that he serves. The model is designed to study one specific aspect of competition. Namely, competition in speed of service as a means for capturing a larger market share in order to maximize long run expected profit per time unit. A two person strategic game is formulated an its solutions are characterized. Depending on the revenue per customer served and on the cost of maintaining service rates, the following three situations may arise. (i) a unique symmetric strategic (Nash) equilibrium in which expected waiting time is infinite; (ii) a unique symmetric strategic equilibrium in which expected waiting time is finite; and (iii) several, non symmetric strategic equilibria with infinite expected waiting time. An explicit expression for the market share of each server as a function of the service rates of the two servers is also given.

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Bibliographic Info

Paper provided by Northwestern University, Center for Mathematical Studies in Economics and Management Science in its series Discussion Papers with number 901.

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Date of creation: Sep 1990
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Handle: RePEc:nwu:cmsems:901

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  1. Teghem, J., 1986. "Control of the service process in a queueing system," European Journal of Operational Research, Elsevier, vol. 23(2), pages 141-158, February.
  2. Colin E. Bell & Shaler Stidham, Jr., 1983. "Individual versus Social Optimization in the Allocation of Customers to Alternative Servers," Management Science, INFORMS, vol. 29(7), pages 831-839, July.
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Cited by:
  1. Mei Xue & Patrick T. Harker, 2003. "Service Co-Production, Customer Efficiency and Market Competition," Center for Financial Institutions Working Papers, Wharton School Center for Financial Institutions, University of Pennsylvania 03-03, Wharton School Center for Financial Institutions, University of Pennsylvania.
  2. Pekka Ilmakunnas, 2002. "Strategic behavior in a service industry," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 23(2), pages 69-82.
  3. Isabel Parra-Frutos, 2010. "A queuing-based model for optimal dimension of service firms," SERIEs, Spanish Economic Association, vol. 1(4), pages 459-474, September.

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