The concern isn't lost revenue it is empty stomachs. You should care more about the empty stomachs.

If people dont make money, then nobody grows the food or the store closes.

I also dont think hunger is a real problem in the US. Death from gluttony is far more common. For those who are hungry, there are already oppurtinities to get food. Putting more free food there doesnt help if they dont have access, or if they are a crackhead.