I think the answer to that is quite simple and clear-cut. It can replace all the existing welfare programs that focus on material needs. It cannot replace progr

I think the answer to that is quite simple and clear-cut. It can replace all the existing welfare programs that focus on material needs. It cannot replace programs that focus on other problems (for example drug addiction, mental illness, etc.) as those don't go away by throwing money at them. Note, however, than the latter have way less bureaucracy associated. Bureaucracy in welfare is almost always associated with fraud prevention from people who want to game the system to get money that they shouldn't get.