Enough with the blanket statements, Sure bill gates is ok but just yesterday the front page had a story of the Sackler family and how they amassed billions by pumping the united states with opiates. They literally killed thousands and ruined the lives of millions, while destroying American society. Billionaries are people, some evil some good.
Also, the point of a government is to provide for it's citizens (with taxes) not to hope that in a 100years we can settle on other planets. And btw, in that scenario we would not be the ones who end up on Elysium. As much as SV programmers like to think they can be part the billionaire class you are not and will never be an oligarch.