Of course, it’s possible for two members of the triumvirate to create a second duumvirate that will profit from the hapless third member. Feel free to add whatever political metaphor you think this fits.
That still applies. The duumvriate chooses (red, blue) and split the loss and gain. Two of the ex-triumvirate also choose (red, blue) and agree to split the loss and gain between themselves only. The last member to the triumvirate is now left out in the cold: whatever they choose, they lose, and they take the whole loss, while both other pairs gain.
That still applies. The duumvriate chooses (red, blue) and split the loss and gain. Two of the ex-triumvirate also choose (red, blue) and agree to split the loss and gain between themselves only. The last member to the triumvirate is now left out in the cold: whatever they choose, they lose, and they take the whole loss, while both other pairs gain.