They're the same thing, actually.

As climate change constrains and limits resources ^((uninhbitable land, reduced food production, unpredictable weather harming logistics, etc.)) Coroporations and governments come into more and more competition over them. When you pair a shareholder-capitlaism economic model that demands infinite growth, with a world of shrinking resources, you inevitably create conflict.

In that environment, you cannot afford to invest resources in preparation/prevention, because every $ MUST go to shareholder value. So inevitably, you don't manage your risks and then catastrophe strikes becuase climate change has altered the actual risk scenarios.