I feel the argument is a little different when it comes to physical goods.
Stealing a Nestlé product takes away revenue just like if it were left on the shelf, never purchased, and discarded by the shop. The main benefit there is the edible portion of the product doesn’t end up in a landfill.
If more people held themselves accountable, these products wouldn’t exist. I know it can be an awkward situation to deny a gift for ethical reasons. Kudos to you.