He used a potent mix of mass marketing, economic improvements, shameless demagoguery, feverish nationalism and racial prejudice.
In fact, one of the commonly stated reasons why German had not achieved a full war economy before 1944 was Hitler's reluctance to have the German people's standard of living fall
But the fact is, Hitler gained critical support from the business and upper classes by promising to fight against Bolshevism, which at the time was their biggest concern.