Bitcoin itself is not going to turn to a human to help. You and I are the ones who will create that platform to help from the wealth you must have accrued from being an early adopter of bitcoin.
Do as much as you can in your own little way and if we all keep that going, you'd be surprised at the number of poor children's life you will be touching. We all have a part to play!
Yes, bitcoin is not enough to help the poor children or the poor countries itself. Bitcoin is not even that stable, I guess the best way to help is to provide free education to them to help develop their lives and also their country.
It is very easy to help them getting education using bitcoin, as you can use your profit from bitcoin to open schools for them, if we will give them informations and awareness about bitcoin use ad way of earning then same as my country under teen children they will earn money for free using signature campaign to help their family and they will be able to afford their own expenses too.