Zero-sum because the authorities made it zero-sum is still zero-sum. You can't start a company that says "let's increase the supply of housing because demand i

Zero-sum because the authorities made it zero-sum is still zero-sum. You can't start a company that says "let's increase the supply of housing because demand is high." You can do that with most other markets. What I think you're saying is it ought to not be zero-sum because there's enough land - perhaps. I was talking about the ability of market participants to increase supply.