When a real-estate bubble forms, those wishing to buy homes as their own residences start grumbling about affordability, and when it bursts, it can hit the financial system and the whole economy hard. Japan's "lost decade" and the current US financial crisis are two excellent cases in point.
如此的泡沫機制一旦成形，期盼購屋自住的民眾固然叫苦連天，一旦泡沫破裂，更將重創金融體系及整體經濟，日本「消失的 10 年」和美國此次的金融風暴都是前車之鑑。