What you're describing is inflation, not a zero-sum game. The price of something is not the same as its value. If you have a fixed amount of somethings but thei

What you're describing is inflation, not a zero-sum game. The price of something is not the same as its value. If you have a fixed amount of somethings but their price is increasing, that's inflation in a zero-sum game. But there isn't fundamentally a fixed amount of housing; it's just that in many markets, the amount of housing isn't growing fast enough to seem like it isn't a fixed amount. But changes to laws and policies could start to increase the amount of housing.