Some more points to consider:
Prosperity for several rich countries consists mostly of numbers in hard drives. The same goes for most of the financial elite that controls the global economy as well as the middle class. In addition, more of that wealth is ultimately maintained and created only by increasing sales of goods and services to developing economies.
Effects of climate change in some parts of the world can affect other parts due to the presence of a global economy:
https://www.washingtonpost.com/news/ene ... the-world/Thus, even those who imagine that they will be isolated from these problems will be affected. This may be reinforced by much of the wealth held by the prosperous vaporizing.
Military and police forces require oil and the same global economy to control not only weaker countries but their own borders. Given crises amplifying each other, they will likely form internal borders as well, controlling local resources for their use. Thus, what affects refugees may also affect local citizens.