GOLLOB, why should folk know certain answers? Just because you may know an answer does not mean that everyone else should. There may be areas you know about but what about 2016 music or who's in TOWIE, what like would you be on things like that?
Ultimately it's a team game and folk on there are willing for someone to sacrifice money just to ensure there is a wider breadth of knowledge across those that are left.
There may be someone who scrapes through by luck and answers only one question correctly in the final chase but if that means the they each get a quarter of the prize, that is better than a third of nothing.