It is difficult for the firm competing through information technology resou
rces to gain a sustainable advantage because systems are easy to imitate an
d substitute resources are often available to competitors. The innovator ma
y be unable to appropriate all of the benefits from information technology
investments. Airlines have installed computerized reservations systems in t
ravel agencies to appropriate the returns from their investments in informa
tion technology. The airlines expected to obtain a number of benefits from
this strategy, including increased efficiency, possible bias in favor of th
e computerized reservations systems owner on the part of the travel agent,
and fees from other airlines for making reservations for them. The purpose
of this paper is to evaluate the appropriation of value by computerized res
ervations systems owners from deploying systems in travel agencies. These b
enefits, beyond fees from travel agents, should be seen in the vendor airli
ne's market share between cities and in the overall performance of the airl
ine at an industry level. This paper models airline performance as a functi
on of computerized reservations systems ownership at two levels: for select
ed city-pairs and at the overall level of the firm. The city-pair analysis
employs a multinomial logit market share model that analyzes five years of
data on 72 city-pair routes. The industry model uses longitudinal data for
a panel of 10 airlines for 12 years. The results of both analyses support h
ypotheses that computerized reservations systems ownership is positively re
lated to airline performance. It appears that strong airlines have appropri
ated the benefits of their computerized reservations systems, turning them
into highly specialized assets for further travel-related innovation. This
work offers useful theoretical extensions and methodological approaches for
the study of similar kinds of network technology innovations that are curr
ently being deployed in association with electronic commerce on the Interne
t.