It is also a good idea to diversify business areas and should be applied in many countries around the world. Although I know that we have countries with few natural resources or territories that are too narrow to develop many industries, it will be a way for the economy to avoid sudden disasters. I always believe in the timeless strategies and sayings of those who go before, never put eggs in a basket.
Well, some countries afraid might not to get return of profit when making an investment in other sector. With so many ways that a certain economy could be efficient and profitable but the problem is there is always a corruption that makes go down and not generating income. Actually many resources in a certain country it's just needs to develop and have a brilliant strategy.