Most non-integrating gap countries have a very different background, values etc. None of them are very compatible with a modern industrial society.

https://en.wikipedia.org/wiki/The_Pentagon%27s_New_Map

In most of these countries, often but not always with tribal backgrounds, it is "grab what you can".

Why is Africa corrupt? Why are they so far behind? Why don't they have good infrastructure, good education etc.?

South Korea was poorer than Ghana in 1957. Why are they rich today?

Trust me in one thing. The answers are unpleasant and especially unwelcome on Hackernews.