Lots of items have incredibly short shelf-lives as well. I spent nearly a decade in the live event ticketing industry so I'll focus on that.

A significant precent of ticket sales are last minute. A friend tagging a long or someone waiting for prices to drop. Food spoils and looses quality fast, but so do good from many industries. I think carving out an exception for food is potentially a slippery slope.

It would probably be better to carve out exceptions for any item that could potentially be worthless after some amount of time. Live event tickets, food, travel, etc.