It's true that concentrating populations in cities increases housing demand, but that doesn't automatically mean costs must rise—housing prices are driven by supply constraints and policy choices, not just demand. If cities allow enough new construction and implement policies like inclusionary zoning or affordable housing mandates, supply can keep pace with demand, preventing price spikes and even lowering costs per unit over time. So, while demand goes up, smart urban planning can ensure affordability without conceding that costs inevitably follow.