If the death and injury of millions of peasants could lead to huge benefits for Russia after the war, the Russian government and its upper echelons would be wholeheartedly in favor of this strategy.
As for the British Empire, once France and Russia both agreed, the British naturally could not keep dragging their feet.
Moreover, the British were confident in their naval capabilities. Being able to defeat the German High Seas Fleet and deploying their army to achieve certain war results, Britain could also possibly become the country with the greatest input.
Arthur, who proposed this method of benefit distribution, actually agreed with this form of distribution as well.
In any case, as one of the Four Great Powers of the Allies, Australasia's share of the spoils would be at least the fourth-largest in the postwar world.
Even if a great power like Italy changed sides during the war, their impact and postwar status would still be absolutely no match for Australasia.
