I dont think so even crypto currencies gets popular and world accepts it and all peopl gets involve into it I dont think  we dont really need government anymore..because government is one sign that  we have peace in every country government not just work to our taxes but leadership  lets just say in one big family..if there is no parente at all the children will no where to go..(I hope you guys get my point ) we always always need the government to govern us not just in money matters but in disciplining our people..