No one can 3-d print their own food or land. Start there. Clothing for free? Huh? Solar panels and batteries (ie energy) for free? Etc.
It amounts to: robots (physically manifested AI) + digital AI ==> any job can be done vastly better than any human.
Consequently, goods and services will far outstrip what any human can consume. We'll end up with deflation.
So we won't have to work and won't need money. Very exhilarating and scary road ahead, but there's no way to stop it.