Versioning: Go Vertical in a Horizontal Market?
结合版本化与消费者学习理论，研究信息商品（如视频游戏DLC）的纵向差异化策略，发现制造商通过版本化可揭示消费者偏好的异质性。
The issue of versioning of information goods has resurfaced, in part as a result of the recent popularity of downloadable contents (DLC) among video game manufacturers. The central idea behind the DLC strategy, zero-day DLCs in particular, is that consumers who find the base version of a game to be sufficiently close to their tastes would want more of its capabilities and would pay a premium to upgrade by purchasing a DLC. To better understand the implications of such a product-line strategy, in this work, we combine the literature on versioning with that on consumer learning. In doing so, we uncover an interesting economic phenomenon that, for an experience good, a manufacturer’s desire to vertically differentiate could actually stem from its inability to otherwise elicit unobserved heterogeneity in consumers’ perceived fit. In other words, we generalize versioning to accommodate both vertical and horizontal heterogeneity.