This paper measures complementarity between two information technology adoption decisions. Assembling establishment-level data of software usage, we develop a discrete-choice model where establishments choose whether to adopt Internet Protocol-based LAN operating systems and Internet...

We empirically estimate the effect of competition on vendor patching of software defects by exploiting variation in number of vendors that share a common flaw or common vulnerabilities. We distinguish between two effects: the direct competition effect when vendors in the same market share a...