You're asking a chick and egg question, I believe it becomes a self-reinforcing loop

In regards to doing business - someone that comes from a corrupt society with a culture of taking advantage of others should be approached more carefully than someone that grew up in the same town as you, of course

This is a lesson learned the hard way, where I moved to a different country and treated everyone with openness and generosity (of time, resources, willingness to help), just to realize people from certain cultures mistake this behavior for weakness and try to take advantage as much as possible