It was meant to be representative of the choices that are made in land distribution, there is a lot of land in the UK that could be built on, building more housing will of course reduce the value of existing housing by increasing supply, protection of the value of houses is part of a conservative / capitalist remit, perhaps it's that factor that is more influential than just a resource issue ? It's going to be hard to persuade anyone to vote IN, it's hard to 'sell' the status quo when people are dissatisfied, it's much easier to sell 'change', fairly terrifying, I really would rather stay in.