Parrondo's paradox via redistribution of wealth

In Toral's games, at each turn one member of an ensemble of N\ge2players is selected at random to play. He plays either game A' which involves transferring one unit of capital to a second randomly chosen player, or game B which is an asymmetric game of chance whose rules depend on the player's current capital, and which is fair or losing. Game A'is fair (with respect to the ensemble's total profit), so the \textit{Parrondo effect} is...