Widening world wealth gap

Some large countries including America and some European countries move their attention from overseas to domestic issues. It fears some people that some developing countries will receive much fewer aids from the developed world, and this could lead to a wider world wealth gap. Is this true? Maybe or maybe not. There are downside effects and upsides effects of such political change.
The downside effect is very obvious, the large countries will put their own interests first, they are not going to provide charity aids; therefore, if the developing countries want to gain some resources from the developed countries, they are more likely to use their own resources to exchange. In addition, these developing countries will be less interested in improving the lower classes' living standards as these governments are more likely to be corrupted. Therefore, not only the wealth gap between countries widen but also the wealth gaps between the different social classes in the developing countries will widen as well. Moreover, as the wealth gap is widening, the social unrest will become more volatile and this will further widen the wealth gap. These are all the downside effects; however, there are some upside effects as well. Firstly, the developed countries will intervene in the developing countries less, this gives a chance for these countries to shape their own political and economic systems that may better suit their current conditions. This can give them a chance to develop a most suitable system for themselves. While the foreign intervention may bring political conflicts and other conflicts, as the foreign countries do not have the knowledge to intervene in the areas without damaging some groups' interests. When they are solving the problems domestically, they may not rise up and fight, as they do have a system to cooperate and communicate with each other; however, foreign intervention is very likely to cause regional conflicts.