Secondly, you assume in the first place that we can somehow build a stable post-scarcity society in which people with no leverage can control the super-intelligent agents with all of the power. The idea that "government will just fix it" is totally ignorant of what the government is or how it emerges. In the long run, you cannot have a ruling class that is removed from the keys to power.
Lastly, Who says we should all support this future? What if I disagree with the AI revolution and it's consequences?
It is kind of amazing how your path of reasoning is so dangerously misoriented and wrong. This is what happens when people grow up watching star trek, they just assume that once we live in a post scarcity future everything will be perfect, and that this is the natural endpoint for humanity.