It's possible for everyone to get wealthier than when they started. You would each like to eat an complete candy and, even if you could practically split it in half, allow no interest in doing so.
So as to means that the solutions they advise are not just based on balanced considerations but also on cultural identities. In a closed universe this is a zero sum transaction: the cultivator gives the store money and receives an equivalent amount of seeds. All of them guesses a number also 1 or 2. If they act harder and bring more money addicted to the firm they can expand the available pool of bonus money, creating a potential for net gain.