Your logic is right, but what he's meaning is that capitalism exacerbates poverty. When homes, food, healthcare become commodities the people that can't afford the new norm HAVE to do what they can to survive.

Yes, some-to-most shoplifters may be shoplifting for less than survival reasons, but in the same way many would argue that capital punishment risks the many at the expense of a few, villifying and prosecuting shoplifters risks the legitimate survival of a lot of people.