It is not just important for developing countries, but also developed ones as well. If you take a "developing" country, the skills that is required to take the nation further, and the skills that requires to keep those skilled ones up is the important figure.
For example, having a nation filled with wonderful software developers would be nice correct? Like to help with AI revolution and all that, great talent, but if you have zero farmers, that means all that software income will go towards buying crops instead. So you have to be able to teach kids, every job matters and you should be paying everyone fairly in order to keep the top also happy, if the bottom isn't happy then the top won't get anything for their talent.
Education is more important than everything in life because there are millions of people who are Investing their money and they have no knowledge and they are illiterate and these people cause of big loss . When they have idea how to read and how to communicate with people,then how they will be able to become owner in life . They will do for owner because they have no qualified which are required to be owner of business and being financial free in life . There should be technical institutes which will teach high paying jobs and also basic knowledge which is required in life . Many people are Investing in property but those are successful how have proper knowledge of real estate and they are using other people's money and they are giving down payment.