When markets are mostly free, prices adjust freely and constantly to adapt to new realities. Yet Keynes failed to understand how market rigidities are caused by government intervention. He blamed markets instead.
Ultimately, we are responsible for ensuring our own security and our incentives are aligned with those of third parties with whom we can contract to assist us. In this regard, security is no different than many other desirable things.
Political candidates are offering endless government spending and "free stuff" for everyone. But at the same time, governments appear incapable of performing even basic duties like ending street riots.