What do clerks at the grocery store create? If you insist that they are useless then close all checkout stands and see how that works out.
There was actually a world leader that shared this negative opinion about financial brokers. His name was Vladimir Lenin and his country was called USSR. There was no free flow of capital in that country and no investments. Even one factory couldn't buy an interest in another factory. That political system doesn't exist anymore for some reason.
Financial brokers create nothing. <-—— Period.