not to use Yiddish to describe a Nazi, but the thing that Hitler possessed that few others genuinely had was chutzpah. His ambitions and his methods weren't particularly unique, and certainly, he was an unusually effective demagogue but those can be found elsewhere. What stands out is the incredible degree of raw aggression and gall to act where others would have been more cautious, seeing their immediate goals as out of reach.
The putsch attempt in 1923, though a failure, is one example. Kahr was already interested in a right wing coup; he was just biding his time while Hitler seized the initiative, and targeted him first. And while acting will sometimes get you killed (Hitler nearly was), it also means that you might miss your moment. Hyperinflation is a moment, but it does largely pass by the mid-20s. The next opportunity isn't really until the Depression hits, and you need to do a lot of work to hold the NSDAP or its parallels together right through.