Actually no, land is the one thing you can't make more of, which is why economists say a land value tax is one of the most efficient taxes (since supply is fixed, taxes can't reduce supply).
It's true you can make more housing by building up, but only if city zoning allows, which NIMBYs don't want.
It's true you can make more housing by building up, but only if city zoning allows, which NIMBYs don't want.