The techno utopia we imagine is a world where nobody has to work. All our needs are taken care of and we live a life of leisure. But as long as there is ownership of the automated systems, those owners will hoard all the wealth generated by that automation.
Labor expenditures and taxes are the only times the wealthy have to share their wealth with the rest of us. If they succeed in disintermediating labor, and governments fail to tax them, the oligarchs will live a life of unlimited luxury while the rest of us die in poverty.