6. Conclusion
A meta-analytic approach is adopted to examine the empirical studies reported in 41 peer-reviewed journal articles. We tested the servitization-performance relationship and the impact of operationalization of constructs (servitization and performance) and control variables (industry and economic region) on the relationship. The results support our hypotheses.
This research has several limitations. First, meta-analysis has some inherent limitations. Specifically, the data in different sampled studies were collected from different sources and at different time, which may lead to biased observations. Up to the present, the number of empirical studies on servitization is still limited. To our best knowledge, we have covered all valid studies in the extant literature. With more empirical studies in the future, it is possible to enlarge the sample size and retest the hypotheses for robustness. In addition, this study analyzes only a few contextual factors. Factors such as product characteristics are recommended for inclusion in future studies. Moreover, the meta-analysis can only examine the linear relationship between servitization and firm performance but cannot explore the non-linear effect of servitization on firm performance, which needs further investigation.