Japanese megacorps are pouring huge investments into high-end housing, dubbed 'Billion-Yen Constructs', proliferating particularly in central Tokyo. With land prices on a continuous uphill climb, these corporate giants are leveraging the scarcity of land with luxurious properties in the heart of the city and gearing up to fuel a potential demand boom among well-off domestic and international clients. The trend has seen a notable uptick recently and is majorly impacting urban development strategies and the housing market.

The notion of land as a limited and increasingly valuable resource is quite ingrained in Japanese society, due to its island geography. Urban construction projects, particularly in Tokyo, involve considerable economic and social factors. There is a balance to be struck between the economic advantages of these developments, potential housing bubbles, and the socio-environmental impact on a densely populated city.

In the US and EU, urban development is also driven by the market dynamics and regulations. However, given the relative abundance of available land compared to Japan, a project's emergence and location are typically based more on social needs, not always solely on profit like in densely populated areas in Japan.