So is there value in increasing the class size every time around? If there's only one winner in a class, at best, does it matter if the class is 10 or 50? 50

So is there value in increasing the class size every time around? If there's only one winner in a class, at best, does it matter if the class is 10 or 50? 50 isn't going to give 5 winners, is it? Is the idea that 50 gives a 5 times higher chance of finding the 1? Is that really true, though? Would focusing on a smaller number of potentials actually be better for finding the 1? Thinking through the scenarios more thoroughly?