In the US, given the production-yields of present agricultural technology, only 1% of the population would need to be employed to feed 100% of the population. That seems pretty "free."
I don't know how it would work out for other things (housing, clothing, etc.) but I expect it would be similar (with e.g. at most 10% of the population needing to work to support 100% of the population, which is less than the percentage of people who want to work regardless of personal necessity.)
In other words: we've already nearly reached post-scarcity. We should probably figure out a way to take advantage of that.