That's not the point. It means they are delivering the same amount of food (2 X half a portion), for pretty much the same price, minus the enjoyment of eating out. And apparently, they take about as much to make as a regular meal from the store.

EDIT: I think we are talking at cross purposes - I meant restaurant meals are usually plenty for two people.

Ah yes, I thought you were referring to the home meals as having two servings.