Some of the disparity described seems to relate to the size of the organization/team and where value is placed. Many say that as an organization grows, it takes more people to get the same work done that a small team can, a la entrepreneurial spirit. The effect in my experience comes from a few distinctions with the greatest being a team wholly bought into the mission, and equal participation. The later doesn't imply equal say, but, rather, the opportunity for all to be involved or informed of every aspect of the project and not rely on roles or expertise to carry the day. I've sent engineers along with product managers into the field to gather requirements; each has a different perspective, and through mutual respect, come to understand that their collective feedback builds a better product. It also means deferring to a third party authority, such as the 'customer' rather than one's ego. Again, the mindset of the individuals in the team is very important, often more so than their assignment skill level. Of course a strong leader needs to act as coach and commander, helping the team move forward and making the tough decisions when momentum is waning.