Nobody said that they can.
>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.
All our needs are taken care of in an imagined techno utopia.
> But as long as there is ownership of the automated systems, those owners will hoard all the wealth generated by that automation.
That utopia can not come if there is private ownership of those automated systems.
Who controls an automated system and whether enough automated systems exists to fulfill everyone's needs are separate things. You could have one person providing for the entire needs of the world by scaling themselves using AI.
Again, nobody said that they were. You are arguing with yourself.
> You could have one person providing for the entire needs of the world by scaling themselves using AI.
Sure, and if one person owned all the automated system he could blackmail others, choose not to use those automated systems to fulfill the needs of some... it is beyond me that in the world we are currently living in somebody doesn't see it.