Jews are certainly responsible for their own networking success.
This engenders envy and hate.
Adolf could not stop repeating himself about this in his book. Only he called it Jewish self dealing.
I hate to contradict an author you seem to admire greatly, but Hitler was full of shite. Jews are no more cohesive a group than any other ethnic minority. In many ways, less so.
The only Jews that Hitler ever knew ... those in Germany and Austria of the 1920's and '30s ... were a very diverse group whose only common bond they shared was that of a religion and ethnicity (and not always that). German Jews of that time were religious, agnostic, rich, and poor, parochial or assimilated. They worked in banking, education, industry, farming, and some were even beggars. Some German Jews had so fully integrated into German society that they were indistinguishable in any way from non-Jewish Germans.
Hitler (and in fact most Europeans) and some people today believe that a Jew is incapable of making any decision, successful or otherwise, without consultation of the Jewish Hive-mind. They believe that an invisible and unidentifiable "Jewish Blood" directs the thoughts and actions of all Jews. Because of this, the Germans went through a great deal of trouble to create the concept of fractional Judaism to decide who lives and who dies based on their perception of the amount of "Jewish Blood" they contain.
This resulted in religious Jews, atheist Jews, uneducated Jews, scholarly Jews, poor Jews, rich Jews, Jews who were immersed in Jewish culture and those who had no connection with the Jewish community of any kind to all be thrown into his meat-grinder to be eradicated from the Earth.
This belief and the thinking behind it led the Germans in 1942 to draw up lists of Jews in all the countries in Europe that they hoped to exterminate ... 11 million Jews, hundreds of of thousands of which had already been murdered.