As shown in Fig. 1, the total profit is less in the decentralized scenario than in the integrated scenario, owing to the double marginalization effect and competition between the OTA's reservation channel and the hotel's. In particular, the total profit of the supply chain increases with the numbers of hotel rooms, t-tourists, and potential customers. The total profit decreases with the number of hotels cooperating with the OTA because the OTA incurs higher opportunity loss when cooperating with more hotels.