Right now - with all of those people leaving the country, it looks like a prime opportunity for some of these 1 per centers to move in give people jobs using the oil and thus increasing their vast stashes. Where are those Koch brothers when you need them?
Generally rich wealthy individuals and big companies avoid investing in countries where the government frequently nationalizes everything from whole industries to individual hotels that don't offer the government a good enough price,* impose unfavorable exchange rates if you try to buy things inside the country with international currencies,** and currency controls if you ever try to move money out of the country.***
* From oil wells to cement factors and steel mills, and from grocery stores to private hotels.
** Until February of this year, Venezuela maintained that the official exchange rate of 10 bolivars to 1 dollar, while, if you exchanged bolivars and dollars on the black (free) market the exchange rate was anywhere from 20,000:1 to 100,000:1. Since February the official exchange rate has dropped to 80,000:1, but the black (free) market rate has dropped to something like 2,000,000:1.
*** One of the (many) reasons fewer and fewer airlines are willing to fly people out of Venezuela is that the major airlines had ~$4 billion in profits that the government simply decided they weren't allowed to either take out of the country, or even use to pay for refueling their planes.
Come to think of it, where are these international trade organizations when these countries get themselves in a financial hole? All you ever hear about is these organizations handing the countries a shovel to dig the hole deeper.
Venezuela has been offered aid from all sorts of groups: the US, the Catholic Church, neighboring latin american countries even the venezuelan refuges who have made it to other countries and pooled their money. They generally don't accept it, presumably because the government sees accepting foreign aid as an acknowledgement of the fact their approach to government isn't working.
The charts and graphs in the posts above showed that things are getting better for the aggregate of the human population. However, I think today's leaders may not be as bright as the men you read about in the history books.
Well that sort of makes sense when you consider the impact of a major source of ascertainment bias: Most leaders never accomplish anything of sufficient significance to make it into the history books.
As a result the leaders you read about in history books tend to be only the extremely effective ones (or the truly terrible ones). while the leaders you see in the world today represent the total distribution from intelligent and effective to dumb, or ineffective, or both.