You can't immobilize an enemy with pure air power. The Nazis found that out in 1940 after, leveling London in the Battle of Britain the British, they were defeated due to poor intelligence and lack of experience did their airforce in
The Nazis lost because rather than invading England when they had the chance, they invaded Russia and created two fronts. England was not fit at that point to repel the entire Nazi army. It was a classic strategic blunder in history. It's the upside of fighting a megalomaniac like Hitler, they inevitably overreach. I'm not saying the Nazis win had they not done that, but wow, it would have been a whole heck of a lot harder to invade Europe.
The second blunder was as the Nazis invaded the Soviet Union and passed through countries like The Ukraine, the locals actually started fighting on the side of the Nazis because Stalin was so brutal. Rather than nurturing that, the Nazis convinced them they were worse and they went back to fighting for the Soviets.
Had the Nazis waited to invade Russia until England fell, nurtured Soviet citizens overthrowing Stalin, then stopped, wow, it would have been hard to believe we would not have agreed to peace at that point.
Of course that would not happen, as I pointed out, Hitler's megalomania prevented that.