I consider abuse of a business policy to be using it in a way that defeats its purpose. Such as returning boots after trashing them for years because they have a "lifetime warranty."

In this case the purpose of the coupon is simply to discount items and the customer is incapable of reading the owner's mind or making business decisions for him.

Again, I get it, you want a low trust society. You don’t have to keep reiterating it. The purpose of the coupon was for items at a far lower value. New expensive stock comes in at a low overhead and customers shouldn’t be expected to think about things! They just consume, that’s their job right?! Consume everything as cheap as possible because that’s what a consumer does!