The surest way to make something unaffordable is to have the government subsidize it on the demand side (a.k.a. tax breaks for buyers). What are the sectors that pinch our pocketbooks the most? Housing, health care, education. What are the sectors with the highest demand-side subsidies? Housing, health care, education. Coincidence? I think not. If the government gave us tax breaks to buy cars and sofas, you can bet the price of those would get out of reach, too.
PS: OK, I’m exagerating a bit. But it’s allowed on this forum, right? 🙂