this is crazy, it is not generally dog eats dog in the west. Most people have a very well developed sense of right and wrong and will acceopt setbacks in life as inevitable if no bad intent is involved. There has been no culture of penalising people in the UK for wrong decisions, innocently made, until recently, and may it stop soon, there is no place for such an attitude in society, Seeking profit from others mistakes is most probably Haram.