I don't know whether Russia will become successful in conquering eastern Ukraine. But one thing is sure. By the time the war ends, German economy will be in ruins. The sanctions did what WW2 failed to do. There is no hope for German industries. They are done and dusted, and the Americans and the Chinese are quick to fill the vacuum. Everyone is talking about how the Russians are going to suffer as a result of the sanctions. No one talks about the impending layoffs and recession in Germany. Just wait for a couple more months, and by then everything will be clear.
I think the German government understands this and that is why it behaves so carefully. They understand that they will have to answer to the citizens for what they have done. After all, it is the inept leadership of the country that leads to such consequences. And excuses about evil Putin or the global economic crisis will not help. People will not forgive them for abandoning their usual way of life.