She's losing 1.6k points in total from her early exit in Korea Open and now Australia Open, causing her to drop to at least WR#5 (likely more). If she falls too much down the ladder and is selected for the Olympics Singles event, she may be allocated into the same half as her other chosen colleague and ousted prematurely. For instance, let's assume #1-4 are CM, DN, WMY, ZYL respectively, Ishikawa is #5 (*hides from zeio*) and LSW is #6. CNT then decides to send CM and LSW for Singles while JNT sends Ishikawa and someone else. This means that the two Chinese women will be seeds 1 and 3 while the Japanese team leader seed 2. CM and Ishikawa will never meet until the finals while LSW may have to face CM in the SF should they be in the same half. For insurance purposes, CNT may then send CM and DN instead since it's assured they will be allocated to different halves by virtue of WR. That is my understanding. Monopolising WR#1-4 ensures that whichever two players the Chinese send for Singles will be 1st and 2nd seeds – this is the long-term goal. At least I believe that LSW's Singles ticket is still up in the air. Her history of bad luck convinces me that even winning the WTTC 2019 Singles is not a 100%.