Good grief, no. They got an extra hour of productive (or semi-productive time; after 8 hours most people are, unsurprisingly, kind of worn down) out of us while waiting for dinner to arrive and a bit of team-building as we commiserate over whatever we're working on causing us to stay late over a meal. That more than offsets the cost of the food.

If an employee or team is not putting in the effort desired, that's a separate issue and there are other administrative processes for dealing with that.