5. Discussion and conclusions
This paper investigates whether any competitive advantage offered by adopting Customer Accounting systems for resource allocation purposes will stand the test of time. The results of our event study, robustness tests and additional analyses suggest that management accounting innovations are a source of temporary rather than sustainable competitive advantage. Hence, although we find evidence in favor of a performance effect of implementing CA systems for resource allocation purposes, echoing prior event studies of management accounting techniques such as Activity-based costing and The Balanced Scorecard (Crabtree & DeBusk, 2008; Kennedy & Affleck-Graves, 2001), our results and robustness tests also imply that adopting firms are unable to sustain this initial above-industry performance over the longer term. CA systems appear to be particularly performance enhancing in the first two years following CA adoption (above-industry ROA of 4–5%-points), after which the abnormal positive performance differential vis-à-vis industry benchmarks diminishes and CA adopters' financial performance reverts to general industry levels. Moreover, our results indicate that CA adopters' performance improves even in times when mean performance of industry peers declines.