[imtringued]

Well, you either tax the land to reduce its value to investors or you don't let people own land in the first place.

[R0b0t1]

No, you can prevent certain types of land ownership. Which is the second one, but it's more nuanced than "don't let people own land."

The real issue I think is that modern wages can't support the cost of new construction. If they could people would simply build more houses themselves.