Digital platforms increasingly organize consumer activity through subscription-based ecosystems that bundle multiple services within a unified interface. While prior research documents positive effects of subscription programs in single-service settin...
Digital platforms increasingly organize consumer activity through subscription-based ecosystems that bundle multiple services within a unified interface. While prior research documents positive effects of subscription programs in single-service settings, less is known about how subscription adoption reshapes consumer behavior across integrated multi-service e-commerce platforms, where services differ in their functional roles and strategic importance.
This study examines how subscription adoption affects consumer spending and transaction behavior within a multi-service platform ecosystem in which online shopping constitutes the platform’s primary service, while delivery services and internal payment systems operate as ancillary services that support transaction execution and fulfillment. Using individual-level mobile transaction data from a major South Korean e-commerce platform spanning 96 weeks, a balanced user–week panel is constructed. To isolate the behavioral impact of subscription adoption from endogenous selection and platform-wide dynamics, the analysis employs a Heckman two-step selection model. The results show that subscription adoption significantly increases spending and transaction frequency across both the core shopping service and ancillary services, with the strongest effects observed in internal payment usage. This pattern indicates that subscription membership not only strengthens engagement with the platform’s primary consumption channel but also reallocates user activity toward transaction execution within the ecosystem. The analysis further reveals selective gender heterogeneity across service domains. Gender differences are evident in shopping and internal payment behaviors—particularly pronounced in payment-related spending and transaction frequency—whereas delivery service usage exhibits no meaningful gender differences.Taken together, the findings suggest that multi-service subscriptions function as behavioral infrastructures that reshape how consumers transact within digital platform ecosystems, with heterogeneous effects that depend on both service roles and user characteristics.