There are a raft of issues. The construction industry has not significantly benefited from large technological advancements that other industries have over the last century and is still human labor dependent. Wages have increased, we've decided it's not ok to kill people anymore, unions have removed exploitation in the immediate supply chains.

We also have more complicated, and are dependent on, soft and hard power structures to access and use capital. A great place to start looking into these issues is Bent Flyvbjerg at Said, Oxford