You forgot the trivia that in 1989 the land on which the Imperial Palace sits upon was said to be worth more than the State of California.
You are absolutely correct. It is said that people in Tokyo are just recently (the last 30 years or so) "mentally" getting over the fact that they may not have to re-build every decade or so due to fires, earthquakes, etc. Up until about the 1950's this was absolutely the norm. So, things were not built to the highest "standards", as people fully expected things to be destroyed within the decade.
Tokyo is an interesting place. It has its very traditional places, its very modern places, its very ULTRA modern places, and of course some places that you'd assume only could exist in the future
It is funny that, talking to most Japanese people, they really don't realize how technologically advanced their Country is, and assume other places are more so.
One person was amazed by the "technology" of credit card machines in America, in which you sign your name on an electronic pad... they don't have those.
Forget the mall in Fukuoka that has a robot that talks to you and can assist you in finding what store you want, and knows where exactly to return to its charging station.
Nope, not as amazing as that credit card processor.