In my local co-op a while ago I saw two normal guys getting stuff out the bin at the side but they looked normal not homeless or destitute so started chatting to em. They said they just took it coz the stuff is still fine and the shop has to throw it away due to sell by date but is still edable for at least a week or so. They said it was amazing how much they took out bags full and the shop was alright with it. The main problem is food waste if they could combat that there would be ample food for everyone noone need go hungry but big cooperation just don't care coz there is no money in it all about profit