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Unfortunately none of this will happen in the Latin American countries in question as long as they continue down the corrupt path that are currently on. They need wholesale changes in order for what are you saying to occur, and in order for that to happen allt he people who have the ambition and ability to make the change need to stick around and do it. Instead they come here. Then they try to to bring their families here. I understand why they do this, we just cannot afford to continue to finance it.

It's interesting that you speak about the briberring, yeah this is a major concern but this is another discourse...Why it all happens and starts. It's not only a matter of "culture" (some culture encourage the bribering you know) but more a structural problem (state not present, wages way too low, education (aka bribering is bad !)...).
I agree with you, effectively the most competent/intelligent/willing people usually go abroad when the situation is too fucked up.
Now be optimistic because it's a long run, ok the state of the "State" is bad but indeed in this case it's "people helping people".
Does the 300 USD that that dude sent out this week to help his family aren't going to be used in part to pay bribes ? Sure it will happens but see the positive point...with the remaining money the family will get better support thus maybe not "teaching the lesson that money should be earned by all possible ways"