[imtringued]

The real secret is economic stability and business friendliness. Foreign investors will automatically flock to your country if you do that and they will leave as soon as you destroy investor confidence. Foreign investors are good because they provide money, training and business expertise. Once foreign companies have set up shop in your country they provide a workplace for your citizens but more importantly your citizens are becoming skilled workers. Some of those skilled workers may become entrepreneurs and when that happens you will need some degree of protectionism for specific industries.

Argentina basically trampled on economic stability and investors. The idea behind welfare is dragging up the poor because there are so many rich people your country can easily afford it, obviously Argentina is not such a country. They have some core export industries but not much else. What happened instead is that the government spent too much on social programs, ran a heavy deficit with no ability to borrow money because they were locked out of the international lending market through their own incompetence. So you have to print money to fund government programs which leads to heavy inflation. They also randomly partially nationalize companies if they are mostly owned by foreign investors. Imagine you buy a car and the car dealer calls you tomorrow that you must bring your car back for a refund. Once an investor gets burned he won't come back. The importance of investor money can't be overstated when your country is bleeding money with no ability to borrow. Metaphor: For some reason people prefer being "in moderate pain" for the rest of their lives over a quick but highly painful recovery.