In the United States, starvation doesn't exist so we've expanded the definition to include more people because we really care to feed people. If you've been to countries where actual starvation is a possibility, you'd understand. So tired of this self hating unaware self flagellation.
The “solution” to countries with starvation today is likely massive full-scale invasion and domination; something the modern world doesn’t have an appetite for.
Also, when ideas like yours are tried, it turns out that power corrupts and absolute power corrupts absolutely, and powers - including the US - serve their own interests. How could you imagine otherwise at this point?
And without democracy, they can't help it - self-determination provides better outcomes because the people who are subject to the 'help' have a seat at the table and they have power. The issues that others dismiss or make secondary (or tertiary) are the ones the self-determined people can insist on in a democracy.
> modern world doesn’t have an appetite for
It's not a lack of appetite, it's counter to our goals of freedom and self-determination, and all experience of prosperity.