Eh, there's a certain argument to be made and considered. Manhattan only started mandating buried lines back in the telegraph era, because every time it snowed

Eh, there's a certain argument to be made and considered. Manhattan only started mandating buried lines back in the telegraph era, because every time it snowed a bunch of lines went down and electrocuted people. Eventually you've got to say enough is enough and cut that shit out. I assume if Tokyo had the problem to the same degree as Manhattan it would already be fixed. If it doesn't, then you're evaluating a more complicated set of trade-offs.