This makes sense, but as far as I can tell it doesn't really answer the question of whether the housing crisis is driven by "monopolies and the corruption of bi

This makes sense, but as far as I can tell it doesn't really answer the question of whether the housing crisis is driven by "monopolies and the corruption of big business". It just rebuts a particular article's claims about whether the housing market is driven by monopolies in the homebuilding industry. But I would say the issue is larger than that. Monopolies and corruption in general have led to great wealth inequality and that is at least exacerbating (if not driving) a housing crisis in many places.