Kopitam too. I saw a family order a bowl of noodle, and ask for one extra empty bowl. Usually, western foods quite expensive and came in big portion. An elderly woman cannot finish it and asked if anyone, around the table, wanted the fries. Eventually, she still left behind 2/3 of her western foods, unfinished. In this regard, 1 set 1 individual meal makes no sense if sharing is not allowed.
I suspect, the restaurant in question is run by PAPPPY cronies. Wanted to milk the maxim out of the diners.