If the idea of the state—and states themselves—had long ago been cast into the dustbin of history, where they rightfully belong, humans would struggle less with the problem of declining demand for human labor (both physical and intellectual) caused by its replacement by machines.
Why?
Because they could live off the interest from the wealth (or a portion of it) left by their ancestors. Wealth that, in a truly free market, tends to accumulate, especially over the course of many human generations.