> To my knowledge rather consulting firms are great at selling the necessity of lots of consultants consultant days: Just let the customer talk very openly about their wishes for the project, and you immediately get an insane scope explosion for the project, i.e. it "needs" an insane amount of consultants over many years to implement all these wishes.

"Oh yeah, we can do that!" Boom, there's a team...somewhere...working on it. It's a line on an on-site project manager's status report.