Because we financialised it everywhere, at every point. Construction and ownership. And the large corporate interests expanded everywhere it wasn't financialised in their attempt to continue never-ending growth. Politicians and those who got in early and smaller investors went along with it because it was convenient and they aren't incentivized to think of the long term consequences. Now growth is hitting a wall because it was never real growth, and the whole system is either stagnant or collapsing.