It's more like: Germany lacked the industrial power of her enemies, singly and in combination, mainly through her own incompetence. Germany could not build enough fighters and bombers to ever hope to gain air superiority. Germany could not efficently exploit what oil and other resources they had and did little or nothing to expand those resources when they became available through conquest. Germany was not a sea power and a Guerre de Course using U-boats as a substitute would not succeed against the two greatest sea powers on the planet. Germany's leadership was anti-technology oriented and held back critical developments like radar, jet aircraft and, guided weapons. Yes, the list is much longer but, a good deal of Germany's problems were self-inflicted due to the nature of the Nazi system that promoted incompetence, personal politics and, a cult of personality among its leadership.