If everyone involved were honest I think it could work. Other billionaires could step up too but the bigger it gets graft becomes unavoidable. If higher taxes could solve the worlds problems I’m sure everyone would agree to raise them. It’s as if we could put an end to wars and genocide.
Is their idea to give men fish, or teach men to fish?
Nope. Musk can do it himself if he had the time. He doesn't.
And when had the UN ever been honest about money?