Abstract
Ⅰ. Introduction
Ⅱ. Literature Review
Ⅲ. Overview of Model
Ⅳ. Benchmark : The Monopoly Case
V. The Duopoly Case : OSS with Support Versus Proprietary Software
5.1 Symmetric Quality
5.2 Asymmetric Quality: Superior OSS
5.3 Asymmetric Quality: Inferior OSS
Ⅵ. Managerial Implications
Ⅶ. Concluding Remarks
References