Or food products that contain a label "Not for resale"... I know a lot of Costco products have this because they sell large quantities, but how is that actually enforced?
Edit: after reading online, I think you are probably right but it seems like a dumb deterrent and inconsistently applied.
[1] https://www.fda.gov/Food/GuidanceRegulation/GuidanceDocument...
They can ask if they want, but they have no legal leg to stand on.