Imagine our technology got so good that housing, clothing and feeding most of the population is affordable without raising taxes, as in Star Trek.
Why do we have to do it without raising taxes? What's wrong with paying taxes? (A shocking thing to say these days, I know!)
The U.S. could now house, feed, cloth, educate, and provide healthcare to its entire population. Is that a worthy goal? U.S. citizens pooled their money to put a person on the moon; they do it for medical research, aircraft carriers, rural telecommunication, and plenty of education and healthcare already. Why not this?
(In fairness, I say the U.S. could do it. I have no data or research, but the U.S. is pretty close to doing it, it's the wealthiest country in the history of the world, other countries do it - I'm confident it's doable.)