Have a look into where the money goes from a lot of "well known charities" let's call them. I was going to say "respectable", decided against.
Check out how much goes towards the CEOs wage and running of the company before it filters down to the people (I'm not saying it's the same with every Charity, but at least check these figures before donating to someone's lifestyle).
I say the cryptocurrency community pull together and try to raise and donate towards forming an organisation to combat it ourselves.
I might sound mad, but listen...
Drones.
We build drones which can automate the process of delivering clean food, water and clothing to remote and exteremely poor areas. They can drop to defined GPS locations based on scheduling and recharge at secure docking bays between destinations (imagine power pylon height, renewable energy powered).
This would eliminate the need for children to walk miles to obtain clean water and allow the communities time to focus on repair and restructure.
It wouldn't need $1bn, we wouldn't be buying marked up DJIs but our own organisation engineering and building the devices at cost price, then deploying to the bases.
I can't give an exact figure as to the cost without being able to justify and breakdown first, but I can't see why it would exceed $50m.
I would be happy to pull together whatever resources I can in order to help such a project accomplish said goals IF we could get a good team of influential / knowledgeable / skilled and of course always a bonus, "healthy-walleted" people together.
It's just a suggestion!!