alt Hacker News> The business model of construction companies is to buy a piece of property, develop it and then sell it for something more than the cost of buying it plus the cost of developing it. Constraining supply increases the cost of property which they then have to pay in order to acquire properties to develop. It isn't really in their interest to increase their own costs.
Let's say for a moment that this is close but not quite actually the business model.
Let's say that the construction companies have spent a long time buying up vacant lots, faster than they are developing them, such that they now have a large inventory of land and would not have costs go up to continue operating if they did what you say.
What would you expect would happen in that case?
At that point you've ceased to describe construction companies and are now describing real estate speculators while calling them construction companies.
Moreover, notice how little sense that business model makes. To do that you would be sinking capital into vacant lots that you're neither developing nor receiving rents from while paying both property taxes and opportunity costs. You're paying interest on the loan or could have been getting ~10%/year by putting your money into the stock market. A real construction company would be trying to minimize the period they're holding an unproductive property.
And even if you wanted to be a real estate speculator, how does that make you more money than investing in rental properties and then actually renting them out so you receive rental income on top of any price appreciation?
Meanwhile, what, if not for zoning rules and other regulations, is preventing anyone else from undoing your attempt to constrain supply by opening up a new construction company which is actually a construction company?