What Financiers Do, Explained in Terms a Leftist Can Understand
They're community organizers.
The difference between them and the people usually called “community organizers” is that they're more likely to use feedback (in the form of prices) to determine what's useful and what's wasteful. Even when community organizers listen to the communities they're supposedly organizing (and sometimes they don't even do that), the bandwidth provided by prices is much greater than that provided by words.
On the other hand, sometimes they don't do that very well. You can tell when that happens because they ask for bailouts.