These people probably exist, but are an extreme minority, and you should not change how the system works because of them. Maybe ban them individually if you see them throwing out at most. Trying to regulate extreme outliers usually costs way more than ignoring it.

Taken from a comment above : Loblaws made 551 million Canadian dollars in net profits in Q4 2023.

And grocery stores are responsible for 12% of the food watsted in Canada