The example of Korea proves just how important the society can be when it comes to developing the 40% of the IQ as you mentioned. Their working ethic and the very logic approach they have to things, made them great at developing technology.
In general the east asian countries are having high IQ scores.

A big part of their development is also that the government decided to support the private companies by making them partially owned by the state. The state would then boost the finances in case things were going bad.