Your link isn't working OP. Googling comes up with this:-
Strategic bombing, 1939-45: A costly, brutal failure | The Economist
hope that works. As to the theme, same old same old. It seems that the book that will make the money is the one that says "Bombing Campaign 1939-1945 was essential to winning the war". That would require fresh thinking though, so more likely we'll have even more safe bets like this one.