Rounding up all the unemployed people, and forcing them, at gunpoint, to dig ditches and fill them will certainly increase employment, but will not do anything worthwhile for society. (I guess the ones that survive might end up in better shape.)
Having them fix potholes or educate children will increase employment, as well as prosperity. (Setting aside the obvious moral problems of the means by which this took place.)
Rounding them up and putting them into workhouses, where they build things for the benefit of a few well-connected individuals is how we have traditionally done this. It combines the worst of both worlds.
What people forget is that jobs are the means, not the end.
There is no one interest of society. Even defining prosperity is relative to who is talking. Having the wealthy subsidize the prosperity of the poor is not very prosperous for them.
There is no “perhaps” about it. There are no policies that will stop a capitalist economy behaving like a capitalist economy.
You could argue that we choose wrong when we go shopping, but ultimately we decide which businesses have an income and which don’t.
https://en.wikipedia.org/wiki/Marx%27s_theory_of_history#Cap...
Perhaps Marx was right and it's time to move to a new phase of history.