Japanese athletes have largely kept a low profile, but the country’s biggest sports star, tennis champion Naomi Osaka, previously said there should be a debate about whether the Games should go ahead.
Could the games have been cancelled?
The contract between the IOC and the host city Tokyo made it clear only the IOC could cancel the event.
The IOC is thought to make around 70% of its money from broadcast rights, and 18% from sponsorship.
It has repeatedly insisted the Games can go ahead safely, even under a state of emergency.
If Tokyo had broken the contract and cancelled, the risks and losses would fall on the Japanese side.
The budget for Tokyo 2020 was set at $12.6bn (£8.9bn), although it’s been reported that the actual cost could be double that.