that controlling decisions sensibly from the top-down is not feasible ,
It's not feasible with communism nor socialism you say but are you saying it is feasible with democracy ?
Not saying it's impossible with democracy either just saying that its just as possible to not be able to do thus within a democratic structure simply because corruption is endemic to all politics or ways of operating governments because people who run these government's can easily turn a democratic system into a despotic one there is nothing inherent in democracy itself to stop this from happening , democracy does not guarantee holiness nor even common decency