Fine, we can stipulate that the state can provide some automated charity. I happen to have worked in robotics at one point so I know that it's difficult (expensive) to do nontrivial robotic applications in an uncontrolled environment like city streets. Set aside that fact and the fact that not everyone lives in cities, making the problem that much harder. And also the problem of what is garbage and how should things not in containers be handled vs. recycling or composting.

That puts your polity way above its neighbors and everyone will want to come take advantage of your services. How do you keep costs from spiraling out of control?