In America the pinnacle of collective action is the corporation.
Corporations are required by law to maximize shareholder value - not maximize communal quality of life.
There are other levels of communal action in the US - churches and family mostly.
Cities are a product of intense collective action. In the US - it's very easy to hobble the collective action of a city. The days of Robert Moses are gone - which is a good thing - he was a bastard.
Even if we adopt strategies like "Strong Towns" that's not a guarantee of non-squalid street conditions.
Nation states need to re-evaluate what their purpose is. Not likely to happen though.