This theory is only a part of the explanation for the developing countries "arrested development" crisis.
However, the reason why nobody could solve it is that it's much more complicated than that.
There are many educated people from poor countries who received education in the best schools and universities of the rich countries, yet they didn't help develop anything in their countries even though a lot of them continue to try. This is because poor countries remain poor because of the actions of their governing authorities. The so called "poor countries" of Africa, Asia and Latin America (almost all of them) have the best spots in the world for rich people to enjoy their stay there with the forever rich local politicians and celebs. These rich people who got control of their whole countries' resources are only thinking of how to increase their own wealth (which they successfully do all the time) while avoiding the locals from rioting and/or causing political problems. The only solution seems to be the spirit of revolution, which is now missing in most poor countries because of the successful strategies of their rich rulers/dictators of making the people busy and on the brink of living and always having a single ray of hope ahead of them all the time. But then again look at the countries that do have revolutions, what do they gain? nothing but more poverty and extra bloodshed that doesn't come with accepting the poor life under a strategic dictator :)
Am I too pessimistic?