Poorer countries suffer from a lack of property rights, protectionism, corruption, and bad leadership. While numbers like this are eye popping, it's also worth noting much of the US falls in the global 5% for wealth.
We know what works: Investment, free trade, building infrastructure, moving past resource extraction, investing in education initiatives, and cutting down on communicable diseases. Slowly, we're seeing a lot of progress.
Yeah, this. When you are talking about genuine low income countries, quibbling about socialism or capitalism isnt really relevant.
What they need is things like institutioal strength and the rule of law, before you start worrying about whether or not they should have a state run electric grid or not.
Athough having said that, by 50% of the World's population, you are in countries that are pretty middle income, and the fact that many people only have the same level of wealth as 8 people does speak to a certain failure of capitalism in the way that it creates extremes of wealth.