It's more complicated than that. (1) It would not benefit those countries if Russia lost its war of attrition over a long period. A diplomatic solution would benefit those countries, as would Russia winning the war. EU countries would want the war to end. (2) War profiteers in those and other countries are making $billions. (3) Countries owed money by Russia are trying not to get directly involved, while indirectly trying to help somewhat. They could do so much more than they are currently doing with a few tanks, planes &c, and instead are trying to mitigate the situation. (4) Countries owed money by Russia aren't against all of Russia, but against Putin's supporters. (5) They are NOT in favor of Ukraine getting Crimea or any other advantage, helping only with minor gains at the front. (6) If EU countries were truly in support for war against Russia, they'd be in a direct war with Russia, as part of NATO.