The Atlantic had a great article about this, the envisioning of how the new work world will work. More barter, less 40-hour (or more) work weeks. I don't believe there will ever be some money they give you just for existing and not working, but the ways you can offset or "pay" for things may change and become more fluid. If you know how to fix boilers and a painter hires you to fix his boiler and you need your garage painted, maybe it's a quid pro quo or you charge someone a lot less because of an in-kind service. More shared living spaces, like makerspaces and artist lofts, where people have less money they have to spend on having a big house, and can get by on whatever they can sell or make in odd jobs.