Not all investments are positive sum - metals are zero sum, proof of work coins are negative sum.
You can’t build a building on top of nothing so if land has a building on it you can apportion some of the productivity of the building to the land itself.
I didn't mean for society, I really meant for the investors, and investor in real estate has the option to rent it out so buyers of real estate operate a positive sum business.
You can’t build a building on top of nothing so if land has a building on it you can apportion some of the productivity of the building to the land itself.
Agreed land without improvements is zero sum.