In my younger days I thought direct democracy was unworkable, but now I realise that might have just been my brain conforming to the bourgeois representative government status quo.
Obviously we easily have the tech to do DD these days, everyone has a smart phone in their pocket, we could do it instantly and on the go. But how you could manage a planned economy that way I’m not sure.
let me preface this by saying that i am in every sense a Dumb Bitch
as we all know the global economy we have today mostly consists of selling people shit they don't need in order to create wealth for the ruling classes. the basic stuff we need to live - food, water, shelter, medicine, power - can be produced locally and sustainably, especially when the profit motive is removed. a federation of communes built around the principle of mutual aid would allocate resources according to need, so a location experiencing drought would receive food relief, a location experiencing catastrophic bushfires would receive equipment, without being expected to offer something up in return.
to get from where we are today to a system like this would probably involve a planned economy, with the state being necessary to establish the means of production in each locality, before transferring ownership to the people that will work there. on a global level, councils of experts in their fields would set the direction for their sector, making decisions according to what is needed. a free flow of information and total transparency would be crucial in this system
of course this all depends on a radical culture shift and wholesale destruction of the upper classes, but hey a guy can dream