That's why waging a war always needs some decent rebuild plan, similar to WW2's Marshall Plan. Never thinking further than "throw a shitload of money towards military contractors, NGOs and whoever we can find willing to serve as a government" is what led to the failed states of Afghanistan, Iraq and Libya.

If the West had offered the people in these countries the clear offer "we give you X billion dollars, in exchange for actual democracy and stability", the results would have been way different...