This would be Tokyo’s second time. The first time they did a ton of environmental damage to the surrounding areas, displaced hundred of families, destroyed navigable waterways and had very corrupt construction bidding.
And this was the Olympics which heralded Japan’s post-war economic boom. The one they tout as an example of “really successful for the city”
The upside was the construction of the bullet train from Tokyo to Osaka. Which was useless for the Olympics as there were no events in Osaka. I have ridden it. It is wonderful. Feels like you are floating on the rails for 3 hours. Comfy seats and those rail specialty bento boxes available at the stations or on the train.