In 20 years, it will be such an economic powerhouse (its megacities at least), to attract significant amount of young people from neighboring countries or ie Af

In 20 years, it will be such an economic powerhouse (its megacities at least), to attract significant amount of young people from neighboring countries or ie Africa. You have half a billion mostly poor people in South east asia alone. They will do what western Europe is doing for decades - brain drain the smart poor from previously enslaved regions to sustain at least some young demographics to support badly designed social systems. Its like printing money to get out of state debt - you let the consequences be solved by next generation(s), if required.