When Is Pure Bundling Optimal?
研究多产品垄断者何时应只提供全部产品的捆绑包（纯捆绑），发现当对捆绑包评价高的消费者也更偏爱小捆绑包时纯捆绑最优，反之则否。
Abstract We study when pure bundling, i.e., offering only the grand bundle of all products, is optimal for a multi-product monopolist. Pure bundling is optimal if consumers with higher values for the grand bundle have higher relative values for smaller bundles compared to the grand bundle. Conversely, pure bundling is not optimal if consumers with higher values for the grand bundle have lower relative values. We prove the results by decomposing the problem into simpler ones in which types can be ranked according to their values for the grand bundle.