Most developers at the consultancy I work for work a normal work week, don't make reports, have normal (meaning neither ancient nor state of the art) dev practice. And there is nothing fraternity like about it, nor is there a climb the ladder idea. It's super boring. You're right about it not being amazing for those who want to work on interesting technical problems. Clients tend to be big, technology tends to be firmly in the legacy category. I think they mainly hire consultants because employees can be expensive to fire under Dutch law for institutions that are financially secure. Which makes it different from consultancy in other countries.