[spin]

That area is prime real-estate in Tokyo. Developers have been itching to build shopping malls, etc, there for ages. It might be a parking lot during the Olympics, but afterwords it's going to be turned into something much more expensive.

The fish market, OTOH, doesn't have to be in any particular place. It needs good access to the ocean (boats) and good access to the roads (trucks). Moving it by a few miles isn't going to change their economics by much (if any).

(I am sad to see it move, though...)