By the time the Entente as a whole has collapsed economically, Germany will have done so long before. Even in Russia the crisis that happened was one of growth as Tsarist industry's total output was actually growing in the period leading up to the February Revolution. And given that Russia is the most economically vulnerable of the Allies, as French industry IOTL made an amazing recovery from the loss of the great bulk of their industry in 1914.....I might note, too, that the cause of Tsarism's collapse was political, namely the incompetence of Nicholas II and his obsession with supporting Rasputin even if it meant alienating every single one of his supporters, and military in that Tsarist armies lost enthusiasm for the steamroller tactic about 1915 and continued use of it in both success and failure in 1916 killed any residual support in the rank and file of the Russian army and degenerated its combat power, which is why the Tsar couldn't depend on the soldiers to shoot all his enemies for him. Economics actually had nothing whatsoever to do with it in the sense of a Russian economic disintegration.
Short form Tsarist Russia collapsed because they couldn't feed the cities. They couldn't balance use of their railnet between raw materials, finished war materials and food. Sorry that is an economic collapse.
Russian tactics weren't anything to write home about but the key issue was the home front.
What happens in Germany is highly debatable and a good case can be made for German collapse on the home front. The ration levels in German cities speak for themselves. At the same time Germany did manage to avoid total break down of central order following the armistice despite the blockade remaining in place and food output of occupied territories no longer available to take food from.
Michael