That’s cause Africa is corrupt and pockets all the money
Also, it’s not factually wrong, it’s factually correct that they have enough money to fix said issues, you can’t change how someone would spend said money but to deny that the money they have couldn’t fix this issues is just wrong
For instance, ending extreme poverty has been estimated to cost as little as $95 billion annually. It’s not about just throwing money at the problem, but you need the proper institutions etc
Did you know that a lot of people are on the street by choice? Because they prefer to be on the street and be free and do drugs and not work than to actually be a productive member of society and have responsibilities. They even have free programs to help them get off the street, and they still don't want to. It's like telling a smoker to stop smoking and there's patches and gums and stuff to help them and you'll even give it to them for free.. Money can't change human nature.
Look at famous sports stars and rappers and stuff, they blow through hundreds of millions of dollars. Those theoretical estimates are just a way for them to get money. They come up with a number, and they want people to donate to their charities and such, which are mostly corrupt and go to the pockets of the ceos.. There's a lot more to this than you think. It's not as simple as it seems.