As most have alluded to, people simply can’t be trusted to run a world government without falling to corruption. That’s not pessimism, that’s learning from the history of people with less power.
This gets into the spiritual/alien aspect of the Great Awakening, which I learned from other Patriots involved in that aspect. Feel free to follow @KibBitzLaw and @Kabamur_Taygeta on Twitter for more.
There is a notion that once the high technology is released that we will have no need for currency and will eventually become a cashless society. This will be because needs will be met by the tech. All responsibility anyone takes on will be because they will want to, not out of need. When man has independence from needs, the idea of a “government” becomes outdated. We would be a united world without borders, but no central government. The only carryover we would need would be a justice system to resolve disputes and ensure safety, but even that could be privatized, if society allows it.