If the coronavirus is still a threat in summer 2021, the Tokyo Olympics will be canceled instead of postponed to 2022
https://www.thewrap.com/tokyo-olympics-president-games-would-be-canceled-rather-than-pushed-to-2022-if-virus-still-a-threat/
That's according to Yoshiro Mori, the president of the Tokyo Olympics organizing committee. “At that time it is canceled. If such a problem as war occurs in the past, it is usually canceled,” he said through a translator. The Modern Olympics have only been canceled three times before: During World War I and World War II.