Yes. This is why humanity desperately needs a global government, and I’m saying that without irony. The deep problems on how to govern such a thing still exist, though. We all know how easily democracy can be corrupted, for instance, so that’s clearly not the magic answer. The people who are currently powerful would actively resist such a thing, and since they’re powerful, they will be successful in resisting it.
An obvious route to such a thing would be using incredible amounts of violence against the currently powerful, and then this world government would be based on violence. Also not a good starting point.
We could just give the reins to AI at some point? Perhaps 99% of sci-fi writers writing about this outcome are just deluded and don’t know what they’re imagining. I volunteer to write and operate that AI.