The core notion of the resource-based view (RBV) is that the possession of certain resources can result in superior performance and, in order for this performance to be sustained, these resources cannot be perfectly mobile. Whereas previous reviews have mainly focused on the relationship between resources and temporary performance, no studies have systematically analyzed the extent to which empirical RBV studies have specifically considered immobility of resources. By analyzing a sample of 218 empirical RBV studies, the authors found that 17% of the studies directly measured some dimension of immobility (by, for example, actually measuring the level of social complexity, unique history, tacitness or tradability). Fewer than 2% of the studies measured the outcome of resource immobility, i.e. sustained performance differences. Based on these results, this paper discusses the consequences of overlooking this key dimension of the RBV (i.e. immobility) and suggests that, and discusses how, future research should consider resource immobility to a greater extent.
High academic interest and numerous theoretical and practical studies on service systems and service ecosystems, paired with the accelerated evolution of the service (eco) system concept, have resulted in complex research in this field. Multiple perspectives from which service systems were studied added to this complexity and inadvertently produced conceptual confusion regarding service (eco) systems. This literature review addresses this confusion by focusing on the evolution of service systems to service ecosystems to consolidate and clarify the field. Therefore, this article's purpose is to systematise the extant research on service (eco) systems and indicate future research directions based on the analysis. Specifically, the article systematically reviews 770 publications on service (eco) systems from 2020 and earlier and identifies the main research topics (focusing on service [eco] systems’ constituent elements, inherent processes, and outcomes), theoretical perspectives, and bridging elements, and suggests future research based on the review results. The article concludes by providing a foundation for continued research emerging from the analysis, with emphasis on five aspects that may stimulate new avenues of research: service ecospheres, service ecosystem simplicity, failures of service ecosystems, paradox in service ecosystems, and panarchy and service ecosystems.