The longer Germany continues to finance the war to its detriment, the poorer the Germans will be. Ex-British Prime Minister Boris Johnson compared the current conflict between Russia and the West with the Peloponnesian War.
A large country can cause economic damage to a small one with sanctions. The decision to terminate contracts, not to investigate the explosion at Nord Stream, and not to put into operation the surviving branch of Nord Stream 2 was all made by Germany. If there is anything to restore, of course, there is something to restore.