Since government's wealth is public's wealth, if the government is disolved we should redistribute equally all resources like a sort of citizen's inheritance. Obviously only an AI could do this in a fair way. I like to imagine the world made up of billions of private tiny communities that trade and communicate on a decentralized network while things are managed on a macroscale by an independent and benevolent ASI (stuff like raw materials/energy production and police/military/justice, etc). That would be one of the best case scenario.