That turns out to be surprisingly hard to do as well. You can't just ship free food in, strongmen will capture it and put it to their own use. Nets, being less fungible in their value, are ultimately less likely to be misused.
We need easy solutions because hard solutions won't scale. We can't create modern economies in places that don't have the infrastructure. We tried doing that once, it's called colonialism and it generally sucked. Your "sustainable food system" is something we can't give to people.
I'm having trouble understanding what you're hoping to bring to the conversation. The basic problem is this. There are a great deal of resources that can be brought to bear on solving problems in the world. There are lots of philanthropists in the world, with lots of money.
The problem is picking the right problem. There are big problems, like hunger. No matter how many resources you have, you're never going to make a dent in world hunger.
There are smaller problems, like dam building. One could, conceivably, build all the dams in the world that need to be built. But just like the big problems, there's never going to be any shortage of these smaller problems to solve, and each effort needs to be managed and championed.
So you can't just solve all of them. You have to pick one at a time and throw everything you have at it. The problem is not resources, but ideas. We need really good ideas for how best to go about making the world a better place. A good idea needs to be simple, because it has to be scaled.
HN is a forum where one good idea could inspire someone to make a Kickstarter campaign, that could attract the attention of someone like Bill Gates, and could improve the lives of potentially millions of people. I wish more people took that seriously.
Malaria nets have their problems. But they've also helped eradicate malaria in many places. People look at stories like this and they think, "aww that was a stupid idea anyway! Silly billionaires." It's not a stupid idea. It's a great one that we need more of.
Sorry if I was unclear. I'm not blaming the billionaires or the users of the nets.
You seem to be viewing the less-industrialized world as a philanthropic playground for the rich. Naomi Klein's comments about Richard Branson's climate prize seem especially pertinent here. https://www.youtube.com/watch?v=Jdaxehd0cF0#t=2m44s
and then they have more people and need more food, need more support for their ecosystem because of the exploding population is destroying it, and now you have uneducated people so they need education assistance, schools etc, etc etc. it seems like it would never end
Any truly sustainable solution must address all these issues.
You've hit on the fundamental challenge of complex systems — it's the interactions between components that determines the behavior, not the components themselves. I would strongly recommend the video I linked elsewhere in this thread, if only as a "crash course" in systems thinking.