But the Russo-German War was no ordinary conflict fought over territory or resources. For Nazi Germany, it was a war of extermination and subjugation that would have killed the Russian people or reduced them to slavery. For the Soviet Union, it was a war of survival. What kind of peace would have been possible? There could be no escape through a peace treaty with Hitler.
The War in the East was a fight to the death, and neither capturing nor defending Moscow would change that. The Soviet Union would probably have fought on despite the loss of its capital.