I don’t think it’s a matter of greed. I’d say it’s about incentives. In every field, people want to progress. I don’t think mathematicians are any different, even though we try to admire and idealize higher principles and the pursuit of knowledge. If you don’t publish papers under your name, you won’t progress in your career or receive enough support to work at the frontier. It’s just a general observation.
I don't think so either, so let's stop the charades and Terrence Tao guest blogs about the field being about some kind of understanding and it actually being about just climbing the career ladder and accumulating status by churning out papers to ensure ones resource accumulation.