Spot on. I'm all for subsidizing industries to incentivize the behaviour we want, but I'm not sure the people who can afford these homes, or $100,000 cars, need it.
They may not need it, but it is worth for the rest of us. Technology becomes much cheaper when it becomes commonplace. If we all pay a bit of that 30% subsidy to rich people, what's the matter? That will allow us to eventually buy it with more than 30% reduction of price without subsidies.