[bookofsand]

Even if we become a space faring species, land will still be a zero sum game.

* Within the Solar System the amount of land available on bodies with not-crushing-gravity is limited to a few times the Earth surface. This includes hospitable bodies like Venus, Titan or the Moon. The entire area of Mars is slightly smaller than Earth's land area, with climate conditions significantly worse than Antarctica. Sobering map: https://brilliantmaps.com/solar-system-surface

* Inter-stellar travel is subject to prohibitive time and energy costs. Physically speaking there is no way for Alpha Centaurians to visit their Earth properties on a regular basis, or vice-versa. This renders the whole concept of 'property owned by foreign stellar body inhabitants' moot.

[seanmcdirmid]

Land will stop being a zero sum game if we can ever figure out how to create pocket spaces. But then again, speculation has hit even virtual real estate before, so what do I know?

[Apocryphon]

Just build orbital colonies.