I saw this entry a month ago and speculated about the natural disasters; a big earth-quake would hit Tokyo for sure not so distant future. As every one knows now, the big one hit Tohoku, which is far, but devastated the east part of Japan. But this is not THE BIG one which will inevitably hit Tokyo near future. Imagine if the 50 percent of the GDP were concentrated in Tokyo as you dreamed, Japan would have faced complete disarray if not a meltdown.
At this moment of the unprecedented disaster, the western part of Japan remains completely peaceful. Japanese economy will recover because of geographical diversity which acts as national safety net. Of course, all the people, not only in the rest of Japan but also rest of the world as you noticed form your own email box, feel sympathy for those who affected and suffering. But, over-specialization, as you have notice in your own entries, often leads to extinction when its environment suddenly changes. So do you still advocate your wonderful Tokyo centric future dream enterprise for Japan?