If direct cash transfers work the economy of the recipient country will grow. They can then afford to build their own schools and hospitals - and employ teachers and doctors to work in them.

If honest and moral people will rise to the leadership positions - which is not what always happens.

Part of the arrogance of the current providers of non-cash support is their foreign, detached judgement that hospitals or schools are the best ways to help people. As if we can just transport shiny buildings to the third world and magically solve all the problems there because those buildings work great in the first world.