My alternative is only go to work as much as you need to. Food, shelter and some basic enjoyment, not more. That's something like $10-20k per year, at most. Which means you really only need to work 2ish days a week.
> And if the implied alternative is to be workable for everyone, we have to magic roads, healthcare etc out of nowhere with no tax dollars.
Not no tax dollars, but certainly less. It's clear that if everyone only went to work half as much we'd only need to build half the roads and trains and airports.
If every single person went to work only 4/5ths of what they do now. (i.e. 4 days per week instead of 5), The economy would only grow at 4/5ths of what it does now, but otherwise, everything would continue to function more-or-less like it does today. Once you see that, you realize it's also true for 3/5ths or even 2/5ths.