If the value of houses keeps going up and up at some point it becomes profitable to build more houses. It's just a matter of getting rid of stupid laws that prevent economic actors from doing so.
If the value of houses goes down over time then people will stop building houses. Housing can easily last decades or centuries if done properly. By the time the problem grows to become unsurmountable you might find that all the construction workers and companies are gone. That's what happened with the nuclear industry. You run a plant for 50 years until people retire all at once then you suddenly have to train thousands of new workers since you failed to maintain the industry.
This is a fundamental problem with providing food. Most food has to be eaten within weeks after the harvest. This means that you must ensure that at all times there are people farming for food. It's not possible to save it for decades or at least people don't want to eat 10 year old food (there are companies that specialize in prepper food). So ultimately, you need to keep the farms going all the time. How can you tell them to keep going if the price of food is going down... forever?
If the value of houses goes down over time then people will stop building houses. Housing can easily last decades or centuries if done properly. By the time the problem grows to become unsurmountable you might find that all the construction workers and companies are gone. That's what happened with the nuclear industry. You run a plant for 50 years until people retire all at once then you suddenly have to train thousands of new workers since you failed to maintain the industry.
This is a fundamental problem with providing food. Most food has to be eaten within weeks after the harvest. This means that you must ensure that at all times there are people farming for food. It's not possible to save it for decades or at least people don't want to eat 10 year old food (there are companies that specialize in prepper food). So ultimately, you need to keep the farms going all the time. How can you tell them to keep going if the price of food is going down... forever?